The practice of going up behind a woman in a nightclub and putting your fingers inside of her without her consent, as part of a dare or contest. A form of sexual harassment.

Cheap (not referring to money); unfair.

A snide statement that is hidden behind what seems to be a polite one. It can be an inside joke, but can also have negative connotation.

1. A term in badminton, regarding an excellent underhanded return

2. Just think about it. No formal definition, but considered an inferior form of bushikan

The action of female grasping to line up the penis for proper angle of penetration prior to intercourse; woman on bottom. Most common when a guy (freehanded) rubs the head of his penis around the pussy lips and doesn't insert; frustrated the female will grasp the dick with a underhand grip and slid it in. The man will immediately feel gratified as the woman was unable to hold out any longer and executed penetration. Excellence is measured when a woman who plays extremely hard to get gives an "underhand slider".

When at a posh restaurant, and the waiter gives you a cheeky hand job while pretending to read the specials.

While sitting down, an individual reaches under their leg and masturbates.