step on a frog

(vb) to break or pass wind; to expel air through one's anus; to chuff; to whistle through one's Y-fronts; to let Polly out of prison; to drop one; to let go.....

Aaaaaaaagh! That MINGS! Our Mark's just stepped on a frog- again!!...

Chalky leaned casually forward from the sofa, picked up the remote; and stepped blithely on a frog. He chuckled and intoned 'Beat THAT!!'

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