3 definitions by CaseJackal

A stretch of time in the early morning, generally around 4 A.M. to 6 A.M., which is either unreasonably late or unreasonably early depending on the context. Used to emphasize how late one has stayed awake, or how early one must wake up.
"We were all up 'til ass o'clock in a call, I didn't get any sleep last night."

"Mark has to get up at ass o'clock to go to work."
by CaseJackal May 11, 2015
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During cunnilingus, the act of using your tongue to draw letters, numbers, or other symbols over her vagina. This is commonly done with the alphabet, but can also be used for spelling out song lyrics or lines of Shakespeare.
I got bored while eating her out, so I started up the Kenosha Typewriter and started spelling out the Pokémon theme. She loved it.
by CaseJackal July 19, 2011
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The technique of drawing letters with your tongue while giving a girl head. The ABCs are commonly used for this technique, however, one may get creative and use words or song lyrics.
She sounded like she was getting bored, then I started up the Kenosha Typewriter on her. She was cumming before I got to F.
by CaseJackal May 30, 2011
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