ITBU 

Im Talking about you.

Thats all it really means

Girl - I dont know why.
Boy - ITBU

ITBU by Mixed McGree June 15, 2018

itbum 

in other words ''chaddo'' or used as an synonym for gay or shit.

1: you know chaddo?
2: yeah his itbum

itbum by nuttychoc August 6, 2011

ItBurn 

An ass, particularly a Canadian one.

Oh my GOD! Did you see the ItBurn on that woman?

ItBurn by Dave December 31, 2003