See wanker or poindexter.

A person who does not wash his penis often, and so provides a breeding ground for smegma loving bacteria, hence the cheese.
Can also be used to describe:
Estate Agents
Recruitment Consultants
Most politicians.

An imbecilic individual, usually a male person, who generally does not lack in mental prowess but is sorely lacking in charisma and the social skill necessary to apply his intellect in a useful, practical or agreeable manner. His lack of a sense of timing and appropriate behavior is only exceeded by the fact that he is oblivious to his condition, causing him to often assert and insert himself where he has no business. To make matters worse, he firmly believes that he is one of the coolest people on the planet. This makes him one of the most annoying creatures on earth and thus has earns him the title, CHEESE-DICK!

An imbecilic individual, usually a male person, who generally does not lack in mental prowess but is sorely lacking in charisma and the social skill necessary to apply his intellect in a useful, practical or agreeable manner.

An ignorant, stupid, mentally challeneged ignoramous who fucks up constantly despite being shown the way.

Trying to make a cheesy joke in class, when in reality the joke isn't anywhere near funny and the person is being a complete dick.

A nobody that thinks they are somebody.