by JSB15 June 20, 2008

The act of suddenly singing, talking, acting like, being a fan girl over, or obsessing over Justin Bieber.
I was sitting next to Alia when all of a sudden she started to sing "baby", by Justin Bieber, she was was having a Bieber Seizure.
Alia- "Baby, baby, baby oooooh,"
Valerie-" Bieber Seizure much?"
Alia-" yes... :/"
Alia- "Baby, baby, baby oooooh,"
Valerie-" Bieber Seizure much?"
Alia-" yes... :/"
by Waldo i miss you March 3, 2011

by Lord Xalian December 3, 2003

by YankIt07 April 20, 2010

Person on twitter: I had a seizure salad, it was good af.
Other person on twitter: You DENSE motherfucker...
Other person on twitter: You DENSE motherfucker...
by Intelligence001 December 30, 2016

Kari: ...And I fell down a flight of stairs!
Michi: That's like a cat on a seizure!
Bob: So, maybe we can hit up that anime con next weekend?
Justin: That'll be like a cat on a seizure!
Michi: That's like a cat on a seizure!
Bob: So, maybe we can hit up that anime con next weekend?
Justin: That'll be like a cat on a seizure!
by Michi Chan May 27, 2005

Mary: John has signed off facebook 7 times in the last 3 minutes.
Jane: Don't worry; he's just having facebook seizure.
Jane: Don't worry; he's just having facebook seizure.
by cleversenorita November 14, 2011
