im sure there are some who do.
but i never thought it would be my wife, of all people. convincing her was one story.
but i finally succeeded, and at one swing party we attended, i left her alone and went exploring. i wanted to go taste some pussy.
i returned an hour later to find guys lining up waiting to fuck her!!! ok it wasnt a GB in the true sense but i lay down
beside her and asked if she wanted to quit.
she said no!!!!!
she was enjoying the attention and found it to be very erotic!!!!!
i think if she would have enjoyed a GB although she has enjoyed a MMMF (me included).