The full form of YTB is You’re the best
The full form of YTB is Yeah the boys
It’s often confusing when you receive a string of letters that can have multiple meanings. This often requires you to rely on context to decipher the correct one. “YTB” is one such acronym. It has two primary meanings. “You’re the best”, and “Yeah the boys”.

Main Meaning of “YTB”
“You’re the best” is often a response when someone agrees to do a favor, or they have done a thoughtful gesture. But it can also be used in a sarcastic manner.

“Yeah the boys” is used by men to express excitement or admiration for something another male has done. It usually receives the response “yeah the boys”. This term is not frequently used by females. The phrase and its acronym are most commonly spoken in Australia.

“YTB” = “Y” (You’re) + “T” (The) + “B” (Best)
“YTB” = “Y” (Yeah) + “T” (The) + “B” (Boys)