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1.
To experience convulsions when confronted with the possibility of interaction with the opposite sex.

In possession of a grossly underused choad.
She was so hot man, i almost went all jono long
by jim May 14, 2004
 
2.
To get sweaty palmed at the first hint of a conversation with a member of the opposite sex. Usually in possesion of a choad.
Oh man, hes gone all Jono Long on us!
by Ally B May 11, 2004