Poo buddies: A bond of friendship, similar in meaning and action to "blood brothers".

Performed by 2 or more friends excreting fecal matter into their hands and exchanging a firm handshake or high five.

Can also be done by dipping your pinkie into your arsehole and then doing a pinkie handshake (also known as a "pooey pinkie")
Mum: Hi kids, if the phone rings can yo... uh, what on earth is that smell?!

Julian: Sam and I just became poo buddies!

Mum: What the...? You stupid little cunts!!
by I love clubbing seals April 4, 2010
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