laughing stock

US /ˈlæf.ɪŋ ˌstɑːk/
UK /ˈlæf.ɪŋ ˌstɑːk/
"laughing stock" picture
1.

a person or thing subjected to general ridicule

:
After his embarrassing speech, he became the laughing stock of the office.
The team's consistent losses made them the laughing stock of the league.