Forum Censor Idea

I tried to type A double S in the "what do you look for in the opposite sex" thread and it simply vanished.  Yes, this is a family site, so let's see if we can't have some fun with it.

A car forum I frequent (www.grassrootsmotorsports.com) has a filter which replaces the naughty words with funny stuff.  Rather than just having them disappear, would it be possible to do the same here? 

Naughty word = replacement tri-related word

Examples:

poop (starts with s) = Stadler

butt (a**) = Bike Saddle

F-Bomb = bonk

See where I'm goin' with this?  Thoughts?  Comments?  Technically possible?