Guys, What would you do if your wife volunteered you to donate sperm to your sister in law behind your back?

Say The sister in law's husband cannot have kids any more, Or her husband is dead, and the sister in law wants to have a kid. Your wife, behind your back, volunteered you to be the donor.

No we aren't talking about some kind of idiotic porn situation, we are talking doctors, in a clinical setting, No sex.

If i were in that situation, the fact that she did it behind my back would lead me to question the marriage. Its one thing to make the suggestion, its quite another to go and volunteer my "stud services".. I would definitely refuse due to legal implications.

Guys, What would you do if your wife volunteered you to donate sperm to your sister in law behind your back?
Post Opinion