1. Being overheard saying something
inappropriate.
2. Getting busted looking at a female inappropriately.
Expression originates from reference to accepting a
counterfeit 100
dollar bill, although the tie-in is kind of inexplicable. Which somehow adds to the amusement, regardless.
1. Steady! Keep your voice down! I think she can hear you. I'm taking a hundred
over here!
2. ...you could totally see
right down her shirt, man! I was checking it out and then I noticed she was looking straight at me and
making a face. I took a serious hundred on that one.