Definitions by hairyhole

suck the back of them 

to suck the back of ones ballbag

gerard: niall you are gay

niall: suck the back of them

gerard: ........ speachless

suck the back of them by hairyhole August 29, 2006

slf 

originated in belfast it literally means to smoke like fuck.
not of tobacco but of cannabis SLF

eg gerry smokes like fuck

graffiti on a wall stating: niall 2006 SLF

slf by hairyhole August 29, 2006