kuckmal

1. Anal gape showing technique, invented and popularized by Jean-Yves Le Castel (b. 1965), French porn actor. The woman's back lies over the man's chest while having her thighs held close to her own chest. When the penis gets unplugged, the anus and a bit of the rectum can be seen by others

2. Misspelling of "guck mal" which means "look (at once)" in German.

Süße, kuckmal! — Sweetie, look now!

Never look up for 'kuckmal' while using somebody else's computer.