I got a good idea for each game mode
Solo: See how long you can go without leaving the toilet. You must also be sure to manage your toilet paper supply or bad things will happen.
Duo: Similar to Solo. You are able to donate tp to your partner if they happen to run low.
Squad: With your full team, you all must work to survive the onslaught of a meal at Taco Bell without getting a fractured butt. You can also donate tp to your teammates if they get low on supply.
Versus: A 1v1 against a random person to either make the biggest poop or be the last one with tp. You have a launcher that you can shoot at the opponents tp to sabotage their supply, although you have limited ammunition and it's not very accurate.
Tournament: A competition to see who can make the biggest poop of all of them. The winners move to the next round while the losers compete with other losers to get back in the game. Winner is the victor of the last 1v1.
Battle Royale: It's you against everyone else. You have to be the last to get a fractured butt. You will be supplied with Taco Bell taco launchers that are so efficient that they can home into a person's mouth if they face in the taco's direction of travel. As the match goes on, a timer will continuously go down with every time it hits zero, a storm of tacos fall from the sky, killing anyone no matter where they face if they happen to be in the taco's dropping zone. You have to use tp to keep your butt clean from the acidity of the Taco Bell taco remains, and the tp can be sabotaged like in Versus. Last one standing is the winner.
For all of the PvP modes, all toilets will have wheels attached to their toilet for easy transportation and maneuverability, but if you fall off the toilet, you have a few moments to get back on the toilet or you will die for some reason. For the rest of the modes, all toilets will be stationary.