H1, H2, and H3 

H1: A huge, stainless steel bodied, front-midengine, 4wd, all terrain vehicle. Designed by AM General as a military vehicle. AM General was once part of AMC. This is why Hummers and Jeeps resemble each other. AM General became independant before Chrysler bought Jeep from the bankrupt AMC.
Also, a humming blowjob that leads to orgasm.

H2: Produced by GM under license from AM General. Smaller than the H1. Not stainless steel or mid-engine, but pretty damn good off road.
A humming blowjob that does more than just get you hard, but not enough to make you cum. Lots of pleasure before fucking.

H3: Smaller than the H1 or H2, produced by GM.
A humming blow job that just gets you hard, then you move on to fucking right away.

You don't know the difference between H1, H2, and H3 ?

When Anita's on her period, she H1's me. She gives me a hummer, and I shoot in her mouth.

In the morning it's H3. A little hummer, I fuck her, we go to work.

At night it's H2, a medium length, very pleasurable hummer before a fantastic fuck.

H1, H2, and H3 by The Sperminator June 11, 2006

lvl 50 in h3 

a player on the game runescape that built their character as a godsword pure and as a result owns nearly everyone.

<pker1> lets kill that person!
<pker2> no way man thats lvl 50 in h3, he would one hit us both

lvl 50 in h3 by zeroskater890 February 17, 2009

H3O 

H3O

1.
Even wetter water

2.
The hydronium ion
Produced when water acquires a proton (aka a hydrogen ion)

1.
Girl: I'm so wet!
Guy: That's cause you're soaked in H3O

2.
2 H2O <-> OH(-) + H3O(+)
Teacher: And that, kids, concludes our chemistry lesson for today.
Remember, H3O is very acidic, do not try to drink it.

H3O by rzhhhh July 19, 2010

H305 

The room where two LHS students fucked and recorded it.

Yo, we out to H305 afterschool?

H305 by arandomlhskid December 5, 2018

H3nt4i 

A code name for Hentai, only used by real otaka.

Yo Samuel L. Jackson do you like anime.
"Yes I do, H3nt4i too" *manically laughs*

H3nt4i by DashUnaSkorDash April 20, 2018

h3podcast 

Perhaps one of the worst podcasts to have ever existed. Run by Ethan Klein and Hila Klein, they host a podcast that is filled with misinformation, horrible political takes, and is all in all very boring and mundane to sit through.

In H3Podcast #139: "What research do you expect me to do exactly?" - Ethan Klein, after having his false pedophilia accusation disproved

h3podcast by BarryAllenTheFlash August 28, 2020

h3h3productions 

h3h3productions is an amazing Youtube channel run by the married couple Ethan and Hila Klein. They are best known for their reaction based content, such as their most popular reaction video, "Kissing Pranks -- h3h3 reaction video". They are also famous for their video, "VAPE NATION", a humorous video in which Ethan makes fun of the vape craze in society today. h3h3productions are the creators of many notable memes, such as Vape Nation and Ethan Bradberry. Ethan and Hila Klein also have a second channel, simply named Ethan and Hila. h3h3productions is all about the goofs, gaffs, laughs, and spoofs, meaning every video is just lighthearted fun. This couple is also good friends with Jontron and Filthy Frank. In addition to their youtube channels, Ethan and Hila have created FUPA, the Fair Use Protection Association. Ethan and Hila are truly some of the best youtubers out there, with their channel growing bigger and bigger every day. Papa Bless.

Person 1: Vape Naysh, y'all!
Person 2: What the hell are you talking about?
Person 1: It's a meme created by the godly youtube channel h3h3productions. Look at their channel, they're fucking hilarious.

h3h3productions by katootlez August 6, 2016