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A reaction mechanism that removes the hydroxide group on pseudoephedrine yielding crystal meth. The reaction involves red phosphorus(P), hydroiodic acid(HI), and pseudoephedrine.

Was the method used in (at least the first couple seasons) of breaking bad, and is both safer than, and relatively clean compared to the shake-and-bake technique.
Sketchy nerd : “the HI/P is the one we should prioritize...”

Snitch: “holy shit, that nerd is sketchy. I’d better snitch”
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Hi, anybody there :P ? 

The popular opening phrase used in texts by socially awkward guys to seem vaguely casual and interesting without being excessively needy and extra; there is also the clever use of an emoji to convey a playful boyish spirit. It is important to note that this only seems cool to them and not the intended recipient of the text
Normal People:

N: Hey, how's it going?
M: Not much
N(internally): I'm going to die alone and unloved

Socially Awkward

N: Hi, anybody there :P ?
M: Not much
N (internally): I am a cool, funny and valid human being

hi polugo n donute 

A way of saying hello to Polygon Donut

Browning Hi-Power 

A single action, all steel 9mm semi automatic pistol with a 13 round magazine. It was the last pistol developed by John M. Browning before his death in 1926. Design and manufacture was taken over by Fabrique Nationale of Belgium and completed in 1935. It is in service with 100 countries at present, from Great Britain to Korea.
The Browning Hi-Power is a fantastic combat pistol.
Browning Hi-Power by JoeBob September 21, 2003

Hi Hi Puffy AmiYumi 

A pretty good show on Cartoon Network with an interesting sense of style, colorful animation, and unusual, often absurd comedic situations. The show often utilizes morphing scene transitions, sentences spoken in Japanese language, and loud background music that comes from the titular band. Yes, the three main characters: Ami, Yumi and the band manager Caz are all based on real people. One of it's problems is that the secondary characters sometimes share a similar look, use the same wierd gestures, and some are just too one dimensional, grotesque, and unmemorable. Some people feel that the animation is derivative to Japanese anime, while making a mockery of the style. This is disputable, as the show's style is built upon Japanese culture, but it's drawn entirely in an American studio that uses it's own animation style.
"I kinda think Hi Hi Puffy AmiYumi is good. It's genuinely original, playful and wacky, and I just love the main characters. It sure has flaws, but I can forgive them as they don't annoy me too much. I'm not a critic, I'm just having fun, and some of the maverick animation in this is stimulating, while the comedy is often so ridiculous you just have to laught and enjoy it."
Hi Hi Puffy AmiYumi by BKMorris October 16, 2006

Hi Point 

A cheap pistol that's more likely to explode than fire correctly. You might as well hold a grenade in your hand, since that's essentially what you're doing.
Don't buy a Hi Point if you value having all your fingers.
Hi Point by sshauptsturmführer September 7, 2016

browning hi-power 

A superb weapon, the reason why the word "pimp" was invented.
I popped caps in that watermelon with my Browning Hi-Power.
browning hi-power by Captain Dan February 26, 2005