the feeling you get when you have to sneeze
John: "What's with that face?"

TIna: "Sorry I just had an opshkanosh. It went away though."

John: "Ah you had to sneeze. Well you still look stupid."

or

Kasey: "Opskanosh!!"

Jack: "What the hell?"

Kasey: "I felt like I had to sneeze sorry!"
by Shtewkitteh October 14, 2010
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