Top Definition
A person who sniffs another persons bicycle seat after it has been used.
Random Brown Bag Special - "Did Mike just sniff my bike seat after my 20 mile, haven't showered yet today, ate Mexican last night with extra bean dip, probably left a nice poop smear on the seat, bike ride?"

Jack - "Yeap, he is such a pervy wifflebirder."
by Wiff L Birder October 22, 2010
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