Top Definition
All. Day. Sex. Brain.

The state of mind where a person cannot function properly due to the mental invasion of sexual fantasies through the period of one day, usually caused by a specific encounter or experience that day or the night before.
Girl to friend at work:

I spent the night at Jeremy's house, where I got ravished, today I can't shake this ADSB.
by i don't have a name May 03, 2005

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