This Kiwi (New Zealand, typically with farmers, labourers and military) slang phrase is heard in expressions like "don’t bust your foo-foo valve", or "if you do that you’ll blow your foo-foo valve", when someone is trying to lift a weight or do a heavy physical task which might cause physical strain. It is used about both sexes. It has been mentioned that the "foo-foo valve" is the anal sphincter, so that foo-foo would perhaps be onomatopoeic for fart. Generally it is thought to refer to avoiding a hernia, a prolapse, or vomiting while under great strain and/or exertion.
For the past month Tom would hold his groin every time he sneezed since he had blown his foo foo valve while trying to lift the concrete wash tub into his van
Weightlifter Serge Blout'jagutski was urgently told by his friends to stay down in his squat position after they noticed a bulge and leakage in the rear of his gym tights that they presumed was his foo foo valve blowing out when he tried to lift the last weight.
Weightlifter Serge Blout'jagutski was urgently told by his friends to stay down in his squat position after they noticed a bulge and leakage in the rear of his gym tights that they presumed was his foo foo valve blowing out when he tried to lift the last weight.
by Fooslayer September 16, 2013
 Get the foo foo valvemug.
Get the foo foo valvemug. by Fuckk boyy May 14, 2015
 Get the foo foo niggamug.
Get the foo foo niggamug. Any small dog in which the owner refers to themselves as mommy or daddy and the dog as their child, baby or furkid. Will also only eat certain food and goes to the "doggy salon" for styles and wears any combination of hair clips, hats, coats, sweaters skirts or shoes and is always carried on their "walkies" so they don't get dirtyand/or tired. Is sometimes also carted around in a purse, sling, or dog buggy. In short a subsitute child.
by celticwitch333 September 4, 2011
 Get the Foo Foo Dogmug.
Get the Foo Foo Dogmug. A little bunny from a song who had a habbit of hopping through the forest, scooping up the field mice and bopping them on the head. Bunny Foo Foo was later turned into a goon by the Good Fairy.
Down came the good fairy and she said
"Little Bunny Foo Foo,
I don't want to see you
Scooping up the field mice
And boppin' 'em on the head.
I gave you three chances
And you didn't behave
Now you're a goon! POOF!!"
"Little Bunny Foo Foo,
I don't want to see you
Scooping up the field mice
And boppin' 'em on the head.
I gave you three chances
And you didn't behave
Now you're a goon! POOF!!"
by yojadeface January 20, 2009
 Get the BUNNY FOO FOOmug.
Get the BUNNY FOO FOOmug. A reference to a (non-existent) power or mysterious ingredient or hidden effort that creates desirable results. Results achieved, as if by magic, perhaps by slight-of-hand.
We hit our net income numbers through hard work, luck, and a little foo foo dust by the accountants.
by b nivek January 8, 2009
 Get the foo foo dustmug.
Get the foo foo dustmug. 
