TBOI 

Abbreviation for the video game The Binding of Isaac.

"I'm going to stream some TBOI today."
"Is TBOI: Rebirth or Afterbirth better?"

TBOI by Blink-Echo October 4, 2019

tboi 

A guy who fucks up even the simple task such as wearing shoes.

Classic tboi fucked up wearing shoes

tboi by Pakosh December 17, 2021

Tboi 

A whale of a boy made by 50% blubber and 50% twat.

“Hi guys it’s me Tboi”
“FUCK OFF FATTY GO EAT SOME MORE”

Tboi by Hvdyhct May 31, 2018