A chuff grenade is another word for a ball, the plural being chuff grenades. To have sex with someone and cum can be referred to as "letting off some chuff grenades"
Rob: Heya Baby, come here cos I wanna let off some chuff grenades in your direction"
by Matt Damon young October 9, 2009
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The definition of chuff burglers are
fanny flaps

e.g....

"Core today in this weather I haven't half had sweaty chuff burglers" said sarah bruce.

or

"UUURM is that a fillet of fish or pure beef in those chuff burglers said ronald mac donald"

or

"you haven't half got a big set of chuff burglers moosey"

or

"dave wished he could get him some of them chuff burglers either side of his cock"

or

"there's no symetry in those chuff burglers"
by world wide warranty moose. August 7, 2009
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