#1: Old-school term for Premium/high octane fuel.

#2: Also more modernly used as slang term to note things of high quality.
#1: Fill-er-up with high test, dude...Groovy!

#2: Man, that guitar is friggin' high test! If I only had the three grand to buy it...
by chaz360 October 3, 2010
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1. (noun/verb): A test to test if someone has achieved a proper high on marijuana at the request of the smoker or friends, or done by surprise with the intention to scare the shit out of said smoker. The test is usually considered successful when the stoner's heart rate increases, they hold their chest from fright, a man screams like a lil girl, loss of balance, and/or become more startled or panic because of their high.

Constantly holding out your pet snake and making hissing sounds like it is a cobra is considered a cruel unnerving but hilarious timeless high test, as the stoner would most likely like Scooter the boa if they were not so fucked up at the moment.
Jen: Eh, how can I tell if I'm really high?
Fred: I know a high test. Follow my hands. You're going down a hallway.
You turn

right...

You turn

left...

right...

left...
BRICKWALL!!!

Jen: AHHHH! I was so startled I fell out of my chair.
Fred: LMAO! YOUR FACE WAS PRICELESS! LOLOL1337
Jen: I think I just peed my pants; I'm definitely high.
by skywasblue August 18, 2014
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insanely good marijuana, no particular name, it's just always amazing
Me: Yo man can i get a 1/4 of high test?
You: Sure, i havn't smoked shit that good in weeks.
by Pot a wana November 25, 2007
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Sweet stinky weed grown mostly by hicks in the backwoods of Alabama.
I got a pound of Alabama High-Test that I'm trying to get to Tennessee.
by Ketch13 February 19, 2009
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any girl who appears to be on high testosterone
Before becoming gay lovers both bndrew and bardens enjoyed looking at high test girls
by mfdoge March 22, 2019
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