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1.
when someone is acting abit mental of alcohol or drugs or something...
'strongbow sends me whappy!'
by mat 'barrel' barry June 22, 2007
 
2.
verb- to slap someone with something you are holding on to.

noun- something that one can slap with that one has to hold on to.
"i'm going to whappy you with this fish all across your face."

examples of whappy: fish, sausage, bag, feather, rope, water floaty...
by bigc22 July 23, 2009
 
3.
the use of one mouth to pleasure the genitals of another, or the same person blowjobhummerchopper
Bo received whappies from a naíve sorority girl after a long, emotional talk about sensitive things.
by nick and ryan May 31, 2005