Word Yo'.

Sparking up is lighting your preferred unit of marijuana delivery.
A "fatty" is a large diameter marijuana cigarette.
"Couch Lock" is a cannabis variant that when consumed, makes you grab your couch, not daring to move, or venture outside until it's relentless potency subsides.

And, it's good for glaucoma and chemo side effects as well, as it stimulates the appetite, and lowers intra-ocular pressures.

The only negative I see with it is I might sound like Ed when under it's charms.

Out there doing it best I can.