Maybe its only me, but Justin is the only person I have heard about giving $2 bills to strippers and after reading this article on buzzfeed, I assume the picture of this girls tips were from after Justin paid a visit.
http://www.buzzfeed.com/bennyjohnson/cory-bookers-interesting-dms-with-a-portland-stripper
The best part is, its a vegan strip club, in Portland.