Today, one of the vocabulary words for the 8th graders was “uncle”.

Saying this word caused more giggling that usual amongst the student. I racked my brain. What is wrong with “uncle”?

Then it dawned on me. “Uncle” sounds a bit like “unko.” “Unko” means poop.

Ah, unko!

EDIT: You probably found this post because you ran a search on how to say “uncle” in Japanese. Uncle in japanese is “ojisan” (oh-gee-sahn), not to be confused with grandfather, “ojii-san” (oh-GEE-sahn)