fettlin` 

Fettlin`...To engage in a sexual act with another person.

To fettlesomebody
To give somebody a right good fettlin`
To watch two fettlers-a-fettlin` in a car up a dark country lane.

fettlin` by Dr Fox May 23, 2007

fettlin'

fettlin' - meaning to fuck.
- to fuck a boiler (ugly girl).
comes from the steel industry originaly as it means to scrape the slag out of a furnace.

i ended up fettlin' that boiler lastnight. she was nasty.

fettlin' by funnily conical February 17, 2005

fettling 

giving something a good clean. (yorkshire/northern english)
not to be confused with furtling, which is something else altogether.

by 'eck, t'back parlour were filthy. It looks reet gradely now i've gi'n it a good fettling.

fettling by juliebtw October 15, 2005