The wish a person makes, usually the first thing they think of, then blurt out, when they catch a leprechaun. Almost always a terrible idea. Also applicable to other wish granters and devices, like genies, stars, and wishbones.
"I caught a leprechaun and wished I never had to go to the dentist again, so now I have no teeth... what a wishfart."

"I wished I had a million bucks."
"You're rich!"
"No. I have a million male deer. Any idea where I can store them?"
"What a wishfart."
by nighthornet February 1, 2017
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