3. A Woman Was Waiting Ages in the Line, So She Yelled, " Hurry Up! I've Got Starving Kids and a Mother Here!!!"
A single, non-married man replied," Well, Ma'am, we all make mistakes, don't we?
If you don't get it, the 'mistake' that the mother made was having children. See also Children.
Doctor who trying to explain the logic of..well...time travel!