noun
laughingstock; standing joke
Refers to a person or thing that is the object of ridicule or amusement. Often used in phrases like 物笑いになる or 物笑いの種.
彼はみんなの物笑いになった。
He became the laughingstock of everyone.
そんな格好で外に出たら物笑いの種に
If you go out dressed like that, you'll be a laughingstock.