Mechanical failure 

A persistent erection that you have no control over, usually lasting over a few hours

Person 1: Man im so tired, I didn't get any sleep last night because I was in so much pain. I had mechanical failure.
Person 2: That sucks man, maybe you should go see a doctor

Mechanical failure by mtfort February 22, 2018

mechanicalFailure 

aka handsomest guy i know

funniest, coolest fruity homeboy around

very gay for you tbh

"mechanicalFailure is the best tiktoker to ever exist and also the only tiktoker to ever exist"

mechanicalFailure by greasy_lem0n October 16, 2021

mechanicalFailure13

aka the handsomest guy i know

funniest, coolest, fruitiest emo homeboy around

very gay for you tbh

"mechanicalFailure13 is the best tiktoker to ever exist, and also the only tiktoker to ever exist"

mechanicalFailure13 by greasy_lem0n October 16, 2021