TexasCHLforum.com

...with the legal definition, crammin' a spud or a snowball up the tailpipe of a school bus means you just created a firearm...life ain't much fun anymore...

...sounds like a ton of good, clean fun...so it's probably illegal...
...as a teen, I got creative with pipes and marbles and gunpowder...till my grandpa banned me from his garden with my little toys...no doubt about that having been illegal...