It's when an airplane broke the sound barrier at 657 MPH & the boom was So Loud! This was in the 60's & 70's. I sure do miss hearing it!
Hearing a sonic boom was the highlight of my day when I was a kid & still would be. The boom was So Powerful & echoed off the mountains!
by Starchylde May 28, 2016
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The loud, scary, startling noise of your car stereo when you start your car in the morning because the night before you were partying, banging your head to Van Halen and had it maxed out.
I got hit with the Sonic Boom this morning and fucking spilled my coffee all over myself when I started the car...we were jamming to Journey last night...
by b. hanback March 14, 2008
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The sound made when jets, etc., cross the speed of sound.
From Sonic X (Japanese version with English subtitles (fan sub)):

Sam Speed (when he begins using the "Super Nitro"): Super Nitro - ON!

Sam Speed (while using the "Super Nitro"): Out here, I can't accept that someone is faster than me. If you want to pass me, you'll have to break the sound barrier!

*Sonic begins to create a sonic boom while passing Sam Speed*

Sam Speed: Sonic Boom!?

*This exact definition shows up in the anime, see the picture of it with the large yellow SONIC BOOM words above*

Sam Speed: It's over.
by frodaddy July 16, 2005
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noun son·ic boom - \' Sonic Booms, in compounds, past tense = Sonic Banged\

1. A grade of Cannabis Sativa and any derivative of a such plant species or extract forms that are so 'loud' (potent) that it, in fact, breaks the sound barrier making it a far more intense experience than traditional loud packs. That Sonic Boom is the most wicked sticky of all the dub (Rastafarian word for marijuana). The Sonic Boom, ironically, has the potential to render it's user utterly useless and also may allow the user to exceedingly 'turn up'. The sonic Boom is so powerful that others that come within the radius of its handling may cause the party to feel the sensation of having hot-boxed more weed than that of the monkeys of the Dr. Heath/Tulane Study for weeks on end.
A: We vaped some Sonic Boom last weekend, maaaaannn...
B: (interrupts) will you STFU!? You literally told me 100x already! FAAAAAKKK!!!!11!!!!

(a:) Yeah I'm done with the stuff man. Back in Nam the boys and I went off base, a few days before we headed back to the States, to get a little action. Came across some grass and I swear it was laced with LSD. It was the longest plane ride EVER! IT WAS CRAZY!
(b:)Must have been that Sonic Boom......?!..Wait Wait!,, You Do Know You Can't Smoke aci....Never mind, Ig2g

AA:Yeah cuz, I came thru with that Sonic Boom on the love thinking these hoes would would turn up witcha boy.
BB: And what happen?
AA: They dipped out so fast it was nutty...Amanda said she feel like the room.
BB: Word, wtf that mean?
AA: I'ont know cuh, but her homegirl said it took them like 2 days to drive home.

BB:BUAHHHHAHAHHAHAA they still in the driveway.
AA:WHAT!? Today still friday!?
BB: Yeah B.
AA:Shiiii, might as well turn up. You got that herb?
BB: Pshhh, I keeps that Sonic Boom..
AA:Here we go again...
by Man Well February 17, 2013
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A move that can be used in street fighter. It also can sometimes be accomplished in real life if you are having a fist fight with someone, all you have to do is put your wrists together and say "sonic boom" If you are lucky, you will see a flames that moves from your wrists, and strike your opponent
Admiral Awesome: How did you do that sonic boom?
Commander cool: I'll never tell.
by CML April 9, 2007
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SEGA's last dying breath for Sonic.
Well, Sonic Boom failed. Let's hope they don't do the same for megaman
by akmunde January 27, 2016
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