You only get laid once, and that's by your mother!
A: Because their eggs stink. (They're extinct)
Yahoo. There goes my baby.
Eggs get laid at least once.
Bricks can get laid.
Nobody asks, 'who's there ' when you try and tell a knock knock joke.
Don't be depressed
Dead embryos don't tell on their mothers ...
A: Because his mother "panda'd" to his every whim!