mega dong 

It's mega sized.

Josh: I gave patty the mega dong last night.

mega dong by Big daddy tyrese November 22, 2016

Megadong High 

a reference to a level of intoxication by marijuana. used only in cases where "really high" or "super fucking high" won't suffice.

"i feel like gravity is like a latex suit we wear that's attached to the center of the earth. and when we move up it just stretches and pulls us down"

"Dude your fucking megadong high"

Megadong High by Breendo November 9, 2011