Spear

A cigarette made up of half weed and half mint (usually spearmint). Similar to a spliff without tobacco.

Oi Ben, want to go smoke a spear with me?

Ikwa

a type of marijuana cigarette that is typically half weed and half mint (usually spear or peppermint)

comes from the game rimworld, where a tribal short spear is misnamed the ikwa. It is based off the iklwa, a 2 foot spear with a 1 foot long bladed point.

I'm going to go outside and smoke an ikwa, you wanna join?