The words Upstream Tristo typically describes someone's penis to be microscopic and physically cannot grow any bigger then 1 Nanometer in length.
Person 1: Omg Jenifer said that when Tristan took off his clothes just before they were about to have sex, she couldn't see his penis! She even held a magnifying glass to it and still couldn't see his penis. It was an Upstream Tristo size!
Person 2: What a fucking loser!
Person 2: What a fucking loser!
by John Wock April 9, 2022
 Get the Upstream Tristomug.
Get the Upstream Tristomug. by David A April 2, 2004
 Get the upstream from the herdmug.
Get the upstream from the herdmug. virgin territory.
Ranchers use the water upstream from the herd because it is clear and clean.
Downstream would be in the path of pollution/destruction.
Ranchers use the water upstream from the herd because it is clear and clean.
Downstream would be in the path of pollution/destruction.
by Ogma April 2, 2004
 Get the upstream from the herdmug.
Get the upstream from the herdmug. Someone original. 
As opposed to downstream from the herd, which is someone stupid and likely to be drinking water infested with pee or crap.
As opposed to downstream from the herd, which is someone stupid and likely to be drinking water infested with pee or crap.
by The Man April 9, 2004
 Get the upstream from the herdmug.
Get the upstream from the herdmug. Upstreaming (V.): When one fills the asshole of their partner with water then fucks the water out of said asshole.
Sure white water rafting is cool but you ever try upstreaming?
I used to date someone who was into upstreaming. That shit can change your life.
I used to date someone who was into upstreaming. That shit can change your life.
by ............D0 September 12, 2019
 Get the Upstreamingmug.
Get the Upstreamingmug. That girl isn't worth your time, don't go swimming upstream.
Just study or you'll be swimming upstream.
Just study or you'll be swimming upstream.
by fargun October 5, 2025
 Get the don't go swimming upstreammug.
Get the don't go swimming upstreammug.