random little mannerisms or quirks the triplets have that i'm fond of
nick being a matt girl, even though we know these two argue quite often
all of them frequently using hand gestures while talking
matt chewing certain syllables or words
chris having unexpected moments of insight about people, life, and his brothers that are usually hidden behind his more humorous nature
nick disliking physical affection quite a bit more than his brothers but often patting their arms or shoulders, or touching their hands briefly, especially when feeling strong emotions (positive or negative)
the way matt rubs his eyes when he's laughing
the moments when they're all laughing at the same time and leaning
nick's delivery on certain words or sentences, which is a huge reason why he's so comedic. great timing and mannerisms in that
matt and chris giggling in sync
nick and matt sharing a look when chris says something they find confusing, weird, or unexpected
the fact that they keep running notes on moments in their lives that they find amusing, heartwarming, etc. for car videos but in general is such a nice way of remembering life
chris and matt often being on the same wavelength, and most commonly the ones who say things in sync
their wit! we often talk about nick's comebacks but they all have sharp tongues and quick reactions, just in different ways! nick is more blunt and can carry it longer, matt has attitude and usually keeps his more witty comments for specific moments (distinct timing), and chris largely depends on his mood because he's least likely to speak so harshly but CAN
matt's little voice acting moments
also matt's facial expressions when something insane is happening; he always gets so wide eyed
they all make for great reaction images/gifs though
nick apparently being a peaceful sleeper and his brother's being so fond of that
nick and chris often having different interests but breaking out into song together, even after they were just bickering
weird little thing, but how harsh their features can be when they aren't smiling
chris being a bit obnoxious when competitive but honest about it vs. matt being competitive but pretending not to be until he's either winning or thinks he shouldn't be losing...and then there's nick trying but not really caring if he loses or not
them being horny for no reason but especially when the others get weirded out by it, i just think it's funny
matt's honesty and awareness of anxiety and mental health struggles
matt's love for animals and especially how gentle and patient he is with them
chris being so expressive but also keeping certain parts of his heart close to the chest, and the fact that he admits he does this
i love how curious and introspective they all are, especially chris with out of the box thinking or matt with some deviousness
nick being so open about his sexuality and how his brother's support, accept, and embrace that wholeheartedly
matt and chris still being kinda up each other's asses even after saying they were trying to do less triplet related things
unexpected dark humor related to violence or suicide (commonly from nick or matt)
speaking of, nick responding to weird facts or a minor comment with something along the lines of 'that's how he wants to die', which is both funny and slightly concerning because it happens on multiple occasions (ex. the hippo, the molasses flood, 'so should i kms?')
matt being a safe driver but also somehow having road rage
chris ability to be amused by everything, how easily he laughs, how loudly and unrepentantly he does
them bringing up triplet references
matt genuinely being a little bit of a shapeshifter (ex. looking a bit more like nick or chris at different points in their lives, beard vs no beard, 'tuff' vs soft matt)
nick responding to mentions of food he loves with something along the lines of 'i want to rub that all over my body' OR the exact opposite, with 'there are so many things i'd hate to be covered in'
matt being a deeply nostalgic person
chris' love for 'classic' designs, all of them enjoying vintage elements in their personal aesthetics
nick being openly appreciative of female musicians. i feel like this isn't super common among male youtubers. they often listen to men to near exclusivity
i love that they all accessorize!
when they have the sillies or start playing up some zesty mannerisms
how often they make references to other media. sometimes it's pop culture moments, niche things from their childhood or specifically boston, or things they watch and listen to
chris making gay jokes to nick, and nick calling him gay back over stupid shit like bros what are you doing
them arguing or yelling at each other in one minute and then talking normally or laughing the next
when they call cluster together into one space without realizing (it's so adorable)
THERE'S PROBABLY SO MANY MORE. these are just the ones i'm thinking of at the moment.