cachinnate 

To laugh loudly

She cachinnated till her sides must have ached.

cachinnate by soho maki September 9, 2010

cachinate 

To laugh loudly and obnoxiously.

Seeing that his plan to take over the world was about to actually work, the evil overlord cachinated with glee

cachinate by HPL May 15, 2010

chachinate 

To cut the sleeves off of a t-shirt, invented by Chachi, thus raising your cool factor by several points.

I was going to throw that old t-shirt away but I decided to chachinate it instead so I can look super cool.

Dude, you totally chachinated that shirt - I wish I was as cool as you!

chachinate by Capt. Underpants October 7, 2007