A variation of DTF(Down to fuck), DTLB meaning Down To Lick Butthole. One can pretty much assume the rest.
-"Dude is that girl DTF?"
-"Naww, she's DTLB, she's a fuckin' frrreak!!"
When you go to a party, get extremely hammered, and throw up in all the places the host specifically asks no one to throw up in.
-"Dude I totally pulled a Ryland last night and threw up in the middle of Dylan's deck and all over his brother's room"
-"Didn't he specifically tell everyone to not do that last night?"
-"You need to get your shit together, man"