To grind one's genitalia in a press-and-release pattern against a particular object or surface; usually associated with an inanimate object.

A stupid person; it refers to the lack of surface area on an individual's brain. The general thought is that the more surface area (wrinkles, creases, etc.) a brain has, the smarter the person is. Conversely, a person with a smooth brain (no wrinkles) has less surface area and would therefore be stupid.

The (upper and lower) curves of a woman's body.

A big bump on the back of a camal.

used in black eyed peas song "my humps" - refers to her "lovely lady lumps" (i.e. her breasts and tushy)

hump for a man or woman to sit on his/her back and move up and down, hard and fast

In England, people may say this when you are in a hotel. It means to carry.