Funnel means to be having fun while under an influence; Alchohol, Marijuana ect. This use of the word is derived from the act of funneling a beer. The original term was used primarily for intoxication via alchohol, but the word has since then been changed to primarily refer to intoxication caused by Marijuana. Intoxication by way of Alchohol is now known as Original Funnel, to respect the origins of the word.
Noun: lets go get funnel, guys.
Adjective: I'm so Funnel right now