1. Have sexual intercourse with.
2. To hit, particularly hitting a person on the head.
3. During the hayday of MUDs (Multi-User Dungeon games, text-only roleplay like adventure games played mostly over the net) a commonly said or done action as a sign of mild disapproval or for no particular reason. Polite convention require(d/s) the bonked individual respond by saying oif. Some believe not doing so will upset the bonk/oif balance in the universe, with great consequences. Not saying "oif" is somewhat akin to a ( without a ) or unmatched quotation mark. The practice is still somewhat alive on IRC and (to an even lesser degree) other means of net chat. It has, however, to a large degree been replaced by the fish slap.

A highly potent energy drink usually bolstered with several radioactive isotopes, with flavors for two teams--RED, and BLU.

It's a favorite of the Scout.

A Black country (English area)slang term for Little Hill

A very old outdated term for sex. It was once considered cool to say bonk in 1996 but if you use the term today you will sound like a douche bag.

intercourse; to have intercourse.

British usage. Somewhat similar to "boink" in the U.S.

the fun word for sexual intercourse

To strike someone with a foreign, hard plastic object. A bonk will usally result in a loud "crack" if performed corectly. A well place hit on the elbow, head (skull), knee, or spine will result in a red inflammed welt which will be sensitive to the touch for hours.