Fuck o meter 

It means how many fucks u give

The fuck o meter is at absolute 0

Fuck o meter by Gd failallthetm May 25, 2018

give-a-fuck-o-meter 

To measure the amount of interest in something based on a personal scale of giving a fuck.

"Hey this story is so crap it doesn't even register on my give-a-fuck-o-meter"

give-a-fuck-o-meter by HRabbit November 10, 2016

fuckometer 

A device used to assess the shagability of a chick. Ranging from zero to ten, the fuckometer gives a graded scale which dudes can use to compare tail.

Dude 1: "Your mom's a fox, dude. She's 9 on the fuckometer."
Dude 2: "WTF?!!?"

fuckometer by Wizards Sleeve July 27, 2006