Knackered (as in extremely tired). Rhyming slang.

when a person has cum over them and just get sexed again

To be extremely tired and exhausted.
Rhyming slang for knackered.

A person who is white beyond belief. One who can't dance. Either acts this way or has pasty white skin.

Rugby players who are in fact closetted gays,wank as a group onto a cream cracker--the last on to come eats the cracker.

Cream crackers are flat, usually salty buiscuits usually served with cheese. In other words, they are extremely boring. These crackers have a habit of appearing in your nightmares and announcing trivia, continued with the saying:" Isn't that interesting?"

(Expression) the opposite of 'as wet as an otter'; when a woman is not sexually aroused. She's so dry, it's like when you have a mouth full of Jacobs' cream cracker (rather nasty!)