To make silly, or goofy. To change something to make it funnier.
Elizabeth: wow, my painting sure is boring
Sharon: yeah, let's goofify it!
Elizabeth: I'll get the paint and silly string.
the feeling you get wen u say something not funny and sum1 makes it funnier
Elizabeth: Why did the chicken cross the road?
Because it wanted to get to the other side!!!!!
Sharon: As funny as that wuz......YOUR FACE!!!!!!! AHAHAHAHAHAH
Elizabeth: Oh sharon you just goofified my joke! You goofifier!!! GO GOOFIFY