The quilted pattern you get on your nails when you go to bed too
soon after painting them with nail varnish.
N.B.
Even when your nail varnish appears to be
dry, you are still at risk of squeeble.
Girl
One: "I'm going to bed"
Girl
Two: "Haven't you just painted your nails?"
Girl
One: "Yeah... Like an hour ago"
Girl Two: "BEWARE THE SQUEEBLE!!"