#fe answer

"You're the boss" is a response Thomas tells Roman to tell him he's in charge and that he is following his lead. "Hoss" just seems to be added for the rhyme, and has no particular meaning.

Having said that, there is a german band called The BossHoss. They are known for making country style covers of well known pop and rock songs, and their exaggerated 'cowboy' aesthetic.

The community has answered that question before!

During SvS redux, during the animated segments, there were references to the sides who weren't present in the episode. It seems like they were still inside Thomas and even reacting to some degree to what was happening.

Those two were seen as Virgil and Remus, being their colours and representing their personalities.

But at some point, this came up as well.

Logan said he wanted to be five by five (loud and clear) about Thomas being five by five (alright, fine). He holds up the flash card of the saying (which yes has multiple meanings)

It comes from millitary radio communication: the clarity of the signal goes from one (very unclear) to five (loud and clear)

I believe the term refers to a ship in which all sides are involved. Originally, it was synonymous with LAMP but later it evolved to include Janus and Remus.