Type "baabaa" at the weapons option screen. Then, exploding sheep, the banana bomb, and full motion with the ninja rope will be available during game play. Type "aabaab" at the weapons option screen to disable cheat mode.
Type "aabaab" while shooting a mini-gun.
Type "aabaab" while firing a banana bomb.
Select a target with the Uzi, then hold [Shift] + [F1] and press [Space].