This was in a sketch show but I can't remember which one.

( Dr. Shambolic je suis charlie, Thu 10 Jan 2013, 20:13, archived)

I remember a Paul Merton sketch,
"I've got something to tell you... you're not adopted," comedy basics.
( Moon Girl Technologies horrendous beanbag, Thu 10 Jan 2013, 20:15, archived)