And he has not done his brother's wife. He has accidentally walked in on his brother's wife topless.
All he can say is "...I really must be off."
He would rather not be sexually attracted to his brother's wife.
This leads me to imagine a situation where the man is not attracted to his brother's wife, really, but hasn't had sex in a long time. The first breasts he sees in ages are his brother's wife's.
And he has not done his brother's wife. He has accidentally walked in on his brother's wife topless.
All he can say is "...I really must be off."
He would rather not be sexually attracted to his brother's wife.
This leads me to imagine a situation where the man is not attracted to his brother's wife, really, but hasn't had sex in a long time. The first breasts he sees in ages are his brother's wife's.
"Not my brother's wife's breasts"
Any breasts but those.