Guess what? Goofy Weapons Pack has recieved it's second update! Download it here on my profile.
I changed some of the guns to be goofier, as I thought replacing the guns with plastic ones wasn't goofy enough. The Shotgun is now a duck, the Fists are now a Steam Controller Box, the Super Shotgun is now a Mini Sniper Rifle, and the Chaingun is now a Can Of Compressed Air.
There is currently a bug with the Duck, and Mini Sniper Rifle, where when you fire them; their world item sprite appears on your HUD. I'm working on fixing that.