* 'Use' a condom machine in a bathroom, and get one of a surprisingly large number of condom jokes. "Before you attack her, wrap your whacker!"
* Fire the nuke at something, and occasionally get one of a few random comments. "Just like Hiroshima / Nagasaki / Pearl Harbor!"
* The portapotty company's logo is a sumo wrestler carrying one, with 'Porta-Pu: We Carry Your Load'.
* Most of the vehicles are Titsubishis.
* If there are two rabbits in an area, they will...do what rabbits are known for. And shortly thereafter, with a 'Pop!' there will be three rabbits. One area has a button you can repeatedly press to spawn rabbit after rabbit, who will all start this, and murder your framerate. One well-placed grenade fixes the problem, though.
** Even better in the Redux rerelease on Steam where this now gets you an achievement.
* Some of the {{Ice Cream Koan}}s you get when you find a fortune cookie:
-->Man who stand on toilet, high on pot.
* Lo Wang's seemingly endless collection of penis jokes around his name. Even the video of the remake has a moment where he answers the phone with "You've got Wang!"