Tupper Toilet 

Tupperware used as a sealable urine container to avoid bathroom stops on a long road trip.

Sure I can make it in 6 hours. I've got a dozen Tupper Toilets in my truck.

Tupper Toilet by WiscoTheElder March 6, 2015

Toilet Topper

When a single feces-creating episode produces enough matter to peek some amount of poo out of the water of a toilet bowl.

Note some toilets run pretty shallow and a toilet topper does not carry as much heft in such cases.

I think that I'm gonna have a toilet topper today! I ate an unbelievable amount of beef last night.

Toilet Topper by hotbucketoffarts June 21, 2020