A polite name to call somebody who is an ass hat - but you make a decision to not be vulgar in the process.
My dearest, you have once again proven yourself to be an A-1 butt bonnet!
When a person has such rough anal sex that the rectum prolapses.
Erika ended up with a Butt-Sex Bonnet after her date Friday night.
Puritan headwear worn to hide the shame and guilt of having engaged in anal sex.
Erika came into the pub still wearing her Butt-Sex Bonnet. Her date must have went well.