bong swat, n. — Green’s Dictionary of Slang

bong swat n.

also bong toke

[bong n.¹ + SE swat, a hit]

(US drugs) an inhalation of a pipeful of marijuana.

1992		Eble Campus Sl. Apr. 2: BT – a turn at smoking marijuana. From bong toke.
2002		Tha Farmacess AKA Kasper’s Weed Spot 🌐 Even Garfield smokes weed. pinkpanther’s down for a bong swat.