Me: Ice woman diary: a witch's tin key.
Other: What? You said, "I swim in diarrhea, which is stinky?"
Ice Woman Diary
Explanation
Explain Bear
Alright, listen up, buttercup. This joke plays on how "Ice woman diary: a witch's tin key" sounds like "I swim in diarrhea, which is stinky" when spoken. It's wordplay, see? It's funny 'cause it sounds gross, and you probably have the brain the size of a peanut.