This, right here, is far too true.
While not boy/girl, I do have fraternal twins who don't look a bit alike. I've heard all of these and then some.
Some of the lines missing are,
"Your hands are full."
"How close in age ARE they," asked in a suspicious and judgmental tone.
"I could never handle twins."
"Are they sisters?"
"Do twins run in your husband's family?" Um...that wouldn't matter since he played no part in the releasing of two eggs.
Some of my favorite lines from this clip include,
"I always get pregnant the first time I try.
Great job. Here's your cookie."
"Which one is your favorite?
The one who is not screaming."
"Which one is smarter?
Go. Watch. Enjoy. This clip made my night. I can't stop laughing at it.