Top Definition
The act of smoking marijuana, and then watching a muted version of the 2d Japanese "Astroboy" cartoon, while listening to the music of Ratatat simultaneously. The music and the cartoon eerily tend to sync up, no matter the start time of either.

Note- Most effective when performed as a night cap after a thorough night of drinking. In other words, a "passive" weed activity.
Dude, you guys were up laaaaate last night!

-Yeah, well we didn't get home til four and then we were AstroTatting for at least an hour.
by AstroBoy39 June 13, 2010

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