Hydroluvious 

Hydro "Water, Liquid, Urine"
Luvious "Fit's of Hysterical laughter or Similar"

Hydroluvious is where one person Urinates within their clothing due to extreme laughter.

Also known as Pissing yourself laughing. (PMSL)

Hydroluvious by Squidillydiddilly January 19, 2010

Hydrolicious 

awesome... yet water related.

the new toilet was hydrolicious

Hydrolicious by your alcoholic dad August 3, 2010