Doing a Timbs

The act of pussying out of doing something. It originated among YouTube commentators for when someone says they're going to do something but ultimately back out, usually embarassing themselves in the process.

Person 1: Nathan was about to go jump off that bridge, but he did a Timbs at the last second.
Person 2: screw him for doing a Timbs

But do you have timbs

The worst comeback in all of mankind. It’s no u but on steroids. It takes all the roasts and sends them back times timb dog.

Jack: you’re gramp tramp
Dave:but do you have timbs?
Jack instantly dies, God becomes gay, the universe dies