double guff 

To break wind silently at the exact same time as the person you are nearest to thus creating a more putrid stink to which either party could be held responsible.

whilst sitting in a crowded church Sid let one go and on realising the gravity of the stench frantically hoped to have double guffed with his pew neighbour Maggie thus creating confusion over who laid it

or

Ged 'That stinks innit! yeah man that was mine'
Tezza 'nah bruv I laid that innit'
Pat 'yo dudes yo just double guffed buthzing man buthzing!'

double guff by Laura Crossley January 10, 2009

doublehuffer 

a "doublehuffer" is two guys that have one dick in the pussy and the other in the ass and or but

"dude we should ask that girl if she wants a doublehuffer"

doublehuffer by pufffyxxx August 3, 2007

Doublecuff 

Someone who wants to borrow some dope when they already owe money from the last time they borrowed dope.

Jimmy thought he was slick but Trueman set him straight "sorry man" he said "I ain't down with the doublecuff!"

Doublecuff by tonyhustlebaby February 9, 2013