Hi, so.. you are married to my Mama, right?
Some things:
-Congrats
-I wish happiness to the couple.
-No, I won't go all psych like: "Hurt her and you are dead, got it!?". I have something new: Behave, be good enough to her. <-I hope this doesn't sound rude.
-Welcome to the Family, sir.
-Nice to meet you.