To mess something up SO bad it can't get worse
*Boss:you realy are trumping stuff up,so you are fired
Sexual acts done in the bunk of a truck.
Guy 1: Hey this salesman tried to sell me a truck at a really high price.
Guy 2: Did he at least give you some bunk stuff at that price.
What they teach you in the navy to be useful to your comrades... And prison. It's stuff you do revolving around a boat, or a metaphoric boat. Definitely no second meaning.
A good example of it's use would be
"Hey soldier, have they taught you boatt stuff yet? You need to get that down if you're gonna survive here."
or
"Hey homie, I know you've learned boatt stuff, come show me how it's done >:)"
an youtuber who has a bigger dick then you
neri-does stuff just posted an banger video
Sexual things like kissing,getting down on breasts and giving hickeys
-"Yo i heard there was an orgy list night,did you go?"
-"Yea but i didn't fuck "
-"Really"
-"Yea top stuff only"
Trying to have sex with someone’s sexual or reproductive organs
girl your body got me knocking at your stuff.