TWOTD is "malapropism"

[OC]

malapropism

noun
1. The humorous misuse of a word by confusing it with a similar-sounding word.
2. An instance of such misuse.

[DarkFury]

Did you hear about that one crooked politician who was running for Office? He got charged with malapropism of Government funds for his personal expenses.

[nickel]

While a boon for men with legitimate ED symptoms who don't respond to Viagra or Levitra, injectible treatments are significantly more likely to cause a dangerous condition called malapropism, in which an erection doesn't go away, resulting in damage to penile tissue. Doctors counsel patients taking Caverject and Trimix on how to treat erections lasting longer than four hours--for example, a double dose of the over-the-counter decongestant Sudafed may help, Mills says--and when to seek emergency room treatment.

[ShawnLee]

Malapropism-The non-humorous attempted misuse of props for a comedy sketch that results in stupidity. See Carrot Top. From the Latin mal and propis.

[zippyjuan]

If I really want to go into a sugar-induced comma I will make a peanutbutter and malapropism sandwich on grahm crackers.