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Small, invisible rodent that leads what one imagines is an idyllic existence in the ample cleavage of beautiful ladies.
by Citizen Sade March 14, 2008
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A titmouse is a very small insectivorous bird that come from the family Paridae and are only found in the northen hemisphere and Africa.
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The name titmouse is attested from the 14th century, composed of the Old English name for the bird, mase (Proto-Germanic *maison) and tit, denoting something small. The spelling was influenced by mouse in the 16th century.
"What the hell is that on my window ledge?"
"Don't worry dude, chill, its just a titmouse."
by Matt[O] September 10, 2005
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1. A person with an extreme sexual fixation or preference for large breasts.

2. A man who focuses on the breasts during sex. A Mammaphiliac.

see also: tit fiend.
"Joe would live in her cleavage if he could. He is a total titmouse."
by NihilistDom August 24, 2009
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Small Northamerican song bird.
The other day I was hunting in my backyard and shot a titmouse right out of the tree!
by Farcus Prime August 18, 2005
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A timid man who is nearly always staring at womens' breasts, but just can't work up the nerve to speak to one.
"Bek, button a button. You have a titmouse at ten o'clock," Cherry said, tucking a scarf into the front of her dress to discourage the creepy little man.
by bIrqul May 10, 2012
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1. a small mouse shaped like a tit

2. A religious ceremony, commonly undertaken by the greek orthodox church.

3. A popular parlour game, common amongst the swedish aristocracy, which involves the youngest and most nubile female members of a party gathering to disrobe and attempt to ensnare a mouse by trapping it between their bosoms.
by moley May 16, 2003
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