A term used by teachers, specifically chemistry teachers, that signify the class will do something extra. Contrary to the name, it is usually hard, but keeps the students motivated!
*After finishing a stoichiometry problem*
Mrs. Callis: Let's do the next problem... just for funzies
when someone you love or close to you says or does something that gives you a tingling sensation, and melted or warmed heart, sends your heart racing to the heavens, even the "good" kinda of goose bumps! meaning can be used on a friend, loved one, or your boy/girl friend.
girl says: you are amazing and you make me smile when i see you!
boy: aw warm fuzzies!!!