SFS (Sonic Fan Syndrome) is when a person or community of people gaslight themselves that a bad product or franchise is actually good.
by anonymous March 13, 2022

by tomatolovererererererrerer December 27, 2021

When your banging your partner and then soon you start shoving your penis into her anus, and you try to shove it until it touches her sphincter, and then after minutes of shoving, you cum a painful stream into her anus. Named after the aerial stunt from MLP: FiM.
Last night, dude, I started giving your mother the sonic rainboom and she was like, "OWWW!!! STOP IT!!!!".
by A Really Bucking Fastard January 17, 2013

Someone calling handsfree with an ear-chip or earcuffs who falsely assumes s/he's alone in an elevator, bus or public space, causing sonic environmental harm.
The woman was shouting at her invisible interlocutor, and people started turning pale, nauseated by this sudden sonic privacy leak.
by RomulusKesher July 13, 2012

by SCGD November 24, 2022

The method of giving a woman a orgasm with a one foot hotdog from Sonic while in the Sonic bathroom.
"Wanna go to sonic?"
"Ya I heard of the new Sonic Weiner Method"
"...sounds lit (rolling eyes back into head)"
"Ya I heard of the new Sonic Weiner Method"
"...sounds lit (rolling eyes back into head)"
by Gregory3298 July 27, 2016

A sh!tbox car is one that is worn out car that is falling apart, litterally leaving a trail of parts down the highway.
The sonic part comes from the fact that this car is equipped with a fart cannon muffler. the term sonic sh!tbox usually implies that the car is eurotrash.
The sonic part comes from the fact that this car is equipped with a fart cannon muffler. the term sonic sh!tbox usually implies that the car is eurotrash.
tom: gee i gotta work on that junk car of mine, dang 500 dollar sway bar bushing is shot
andy: 500 bucks for a sway bar bu...HEY, you have a fart cannon on that Saab?
tom:oh yea, alll these expensive parts means i have no money for a real muffler
andy:yep, that's official, Sonic Sh!tbox
andy: 500 bucks for a sway bar bu...HEY, you have a fart cannon on that Saab?
tom:oh yea, alll these expensive parts means i have no money for a real muffler
andy:yep, that's official, Sonic Sh!tbox
by tghnjolk,mdfe April 3, 2013
