Burger Worker -- Obama Didn't Want Change!

6/3/2009 5:30 PM PDT
Barack Obama was definitely in the mood to play a little "just the tip" with the cashier at Five Guys burger joint last week -- as in, dude totally let her keep the change!

TMZ talked to the lady who took the $72.40 order from the Prez, and she tells us he let her keep the extra $7.60 from the $80 he threw down.

It ain't much -- but how many of you actually tip for fast food?!