Top Definition
1) The result of combining the genetic information of two male classmates, often with strange personalities. The creation of Migwissacks has been outlawed in most developed countries as of today. 2) see banana.
1) Generic Kid 1: "Did you hear about the accident in Chem today?
Generic Kid 2: "Yeah, apparently they let those 2 DNA samples mix. I hope they didn't make a Migwissack."

2) Generic Kid 3: "Let's see...Looks like I have a peanut butter and Migwissack sandwich for lunch again today."
Generic Kid 4: "Lucky! My mom ran out of Migwissacks this weekend. Trade you for a burrito?"
by randomness7676 March 18, 2009

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