A location behind a Watertown, Massachusetts industrial building, where certain high school students (in the IDS group) would congregate at the beginning of a Friday or Saturday night from 2001-2002. It is located behind a better-known "da spot" so townies and jocks wouldn't know about the IDS meeting place.
What are we doing tonight?
I dunno, let's meet up at da spot behind da spot.
Let's do ecstacy at da spot behind da spot.
I like to get bum fucked at da spot behind da spot.