The state of being entranced of sexual thoughts. Often it takes a little more than a snap to cure.
Guy 1: Hey what's up with Dave? He won't move. Just keeps starin' off into space.

Guy2: Relax man he's thinking about Gloria. He's Cheddar Headed.
by Scare April 4, 2011
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A mature cheddar head is someone who is very mature but acts really stubborn and stuck-up with it, quite snobby. They are mature in a really boring way with no sense of humour and take everything seriously.
'Sophie told me making fart noises is immature.'
'Don't worry, she's a mature cheddar head with no sense of humour.'
by mousey1306 March 7, 2012
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