Why would you do this to your wife? I find it disingenuous and disgusting. Not a member of the "cool kids" here but not looking to join.
So then, if your wife wants to be screwed by another man in front of you are you fine and dandy with that too? Either way, gross.
Fingers crossed? Why not just cross your eyes while you're at it that way it'll look like you're with a pair of twins. Some people...
Again. Gross.