The equivalent of "mushroom stamping", reserved for those men who have not been circumcised. It involves slapping a person with the penis hard enough to leave an imprint on the recipient's body. If the person was circumcised, it would leave a mushroom shaped imprint. If not, a lizard tail. Hence the name- Lizard Whip
While my girlfriend was asleep last night, I lizard whipped her forehead. It turned out great, but I'm sure I'll be couching it for the next week.