To have sex with an extremely rotund female. She must be fat and usually found in a bar around closing time.
"Hey Andy, what did you do last night?"

"Oh I went to the bar, and zip zap paddywhacked!"
by KirkG February 22, 2008
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To have sex with a tumescently corpulent Bar hag.
"Hey Joe, what did you do last night"

"Oh you know. I went out to a Bar and Zip Zap Paddywhack"

"Sweet I love fat whores too!"
by PhilFranklin February 22, 2008
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