Only yesterday
My flight was only 3/4 full, and just before takeoff a couple let their 10-year-old-ish son move from the other side of the plane to empty seats just behind me.

As the flight attendent came round to check seatbelts, she noticed he was alone and asked who his parent were as he needed to be near them at takeoff.

The parent's response?

"He snores when he's asleep, so we didn't want him near us".
(Kliper Filllets Getting noticed by twats on the internet since, Tue 6 Mar 2012, 7:37, Reply)