Thx

This is used as a threat! Thx actually means Toilet has xploded.

A : hey thx for helping me
B : (toilet blows up) MAN #### YOU!

K Thx bye

If a a chick/dude hit you with this line, your whole communication line with them is fucked. Forever...

Chick: "I'm just using you for your money"
Dude: "K thx bye"
Chick: *obliterated forever*