Mattress Discount is a furniture store that sells only mattresses. Its only appearance occurred in the episode "Ghost Host."
This store, judging by the name, should have discounts for its products. The store allows its customers to test out the mattresses even if they sleep on them. Tom is the only known person to work there, but it is possible that there is somebody else. Tom was lying on a bed, sleeping in it, when the flying Dutchman came up and Shouted and screamed at him, in a desperate attempt to regain his abilites to scare people. After a while, the store worker came back, Tom waking up and screaming at the top of his lungs, most likely because Tom heard the screams in his dream, waking up after a nightmare. There was another mattress store bigger than this one in "The Lost Mattress."
The store looks like a typical place you'd find in an industrial estate. It is red and has an image of a mattress on the front, surrounded by tan-yellow "Z"'s. The store also has pictures of its products. There are parking places at the front of the store.
Mattress Discount is an obvious parody of the real life mattress store Mattress Discounters.
Mattress Discount is one of at least two mattress stores in Bikini Bottom, the other being Mattresses & Then Some.