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1.
literally 2 biffles who can live in a pod.

In other words, very similar people!
biffle boy: we're like those peas in those pods that come in two!
biffle girl: you mean, " two peas in a pod! "
by andyouandme January 15, 2010
 
2.
when a man puts his balls in a womans vagina; sex position
I performed two peas in a pod with my wife.
by tnerty June 06, 2010