She pokes Mammon from behind with a finger gun and grins. "Stick them up. I've got you now." Why yes she was just being ridiculous but she hoped she did manage to scare him a little bit
Judging by his hunched over posture, it was clear to anyone that he was up to no good and likely smuggling something from under his jacket. His yelp in surprise only raises more suspicion as he freezes up the moment he’s poked ... but upon realizing it was only the human trying to pull a fast one on him, his shoulders ease up a little, looking a little irritated.
“ What’s up with you sneaking around the place like that?? If you’re trying to keep quiet so Lucifer doesn’t find you, I hate to break it to ya but the more quiet you are, the more suspicious he is and the more likely he’ll go outta his way to find you. ” He’s come up with his own ( correct ) theory about it, too. How to avoid Lucifer, how to keep noise to a level where he doesn’t become suspicious, the whole nine yards!
“ Well, if you were tryin’ to scare me, it didn’t work. As you can see, I’m a little busy right now so why don’t you go bug Levi or someone? ”