when your pounding a bird hard and you shove your thumb up her jaxi,twirl it around her asshole till she blows chunks-and then you pull it out and there is a lARGE CHOCOLATE chip on the end of your thumb abd you frantically wave your hand around down beside the bed to get the nasty stinky hershey bar off you r thumb-hence the wave!
last week when i was fingereing a bird in the dirtbox(and she was a right fatty) and i diddled her ass with my thumb and out came a big old snickers bar!! so i gave her the 'thumbwave' and told her to to get out of dodge!
by dildonose January 23, 2010
Get the thumbwavemug.