A serious feeling of stupidity or ignorance. Often occurs because of a child with disabilities getting the correct answer while you have the wrong one. Derived from the English-ajimbo, or, hey jimbo! or as a child with a penile curve likes to say, AYJYIMBAW!
Dude, it was jimbosonic when that kid with down's syndrome knew that washington lived at Mt. Vernon and I didn't..

Whoah, it's such a jimbosonic feeling to talk to jimbo.
by smartass1234 April 8, 2009
Get the jimbosonic mug.