When one engages in sex chat via facebook chat. Oftentimes dirty pictures are exchanged as one describes the details of the fantasy sexual encounter. If one so chooses, participants may masturbate while doing the one handed typing/clicking move typical of online porn perusing.
"Dude, I totally booked up with my ex last night. It was hot." "I didn't know that booking up was cheating!" "My mom totally walked in on me when I was booking up with Susie."
by muzykchik January 03, 2010

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Top Definition
The act of meeting a girl and instead of getting her number, remembering her name and looking her up on Facebook. Then proceeding to masturbate to her. An alternate form of hooking up.
Man, I booked up with 3 girls last night!

I love booking up with chicks!
by russian reversal November 11, 2006

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When two people are all over each other's facebook walls, constantly commenting on statuses, pictures, posts, etc. Instead of hooking up, they're booking up.
Friend 1: "Man what's going on with Ben and Kayla? They comment on everything the other one does on facebook."
Friend 2: "Guy, they're totally booking up."
by Totes My Goats March 10, 2011

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The act of meeting a girl and instead of getting her number, remembering her name and looking her up on Facebook. Then proceeding to masturbate to her. An alternate form of hooking up.
Man, I booked up with 3 girls last night!

I love booking up with chicks!
by russian_reversal November 12, 2006

The Urban Dictionary Mug

Lotsa space for your liquids.

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Lotsa space for your liquids.

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The Urban Dictionary Mug

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The Urban Dictionary Mug

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The Urban Dictionary T-Shirt

Soft and offensive. Just like you.

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The Urban Dictionary T-Shirt

Smooth, soft, slim fit American Apparel shirt. Custom printed. 100% fine jersey cotton, except for heather grey (90% cotton).

Buy the t-shirt
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