A lady was sleeping with her boyfriend and her husband knocks on the door

A lady was sleeping with her boyfriend and her husband knocks on the door

In a hurry, she hides him in the cupboard but his balls were left hanging outside.
Husband: What is this?
Wife: A new BELL, I bought today from the market, he he..
Husband shakes it to listen the sound, but nothing comes out. He hits it hard, no sound. He punches it, no sound. He punches it again
The guy from inside shouts: Tring Motherfucker Tring