When someone loses all the stuff you lent them.
Chump: Awww man, John just lost all the DVDs I lent him.
FriendOfChump: Damn, you got sidekicked!
by RiffZifnab October 12, 2009
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Batman: Hey B*tch! Get over here and DO something!
Robin(the sidekick):*sigh*, what the hell...i guess
by vainglory January 16, 2009
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A friend/associate of a more popular, charismatic person. The sidekick gains most of his/her acclaim from merely being connected so closely to the more powerful acquaintance. Sidekicks can be found anywhere from comic books (where the term began) to the workplace and schoolyard.
Neil: Is Dan really that popular a guy? Most people in the office just talk to him because he's Ron's little sidekick.

Gina: The two of them are inseperable, you have to give them that.

Neil: Oh, I'll give that little Dan something he won't soon forget!

Bartholomew: Like the Baxter Account?
by Diggity Monkeez March 15, 2005
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the process of having one's digital data (e.g. contacts, images, music files) suddenly and irreversibly deleted from a local or remote ("cloud") storage device (e.g. mobile phone, computer, server) without having caused, or contributed to, such action
Girl, I would've called you back last week but I got sidekicked and lost your digits
by Jerome Crimes October 12, 2009
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A popular contraption made by T-Mobile, which can be used not only for making phone calls, but for AOL Instant Messenger, email, text messaging, internet, and several other features. Most popularly used by teenagers to constantly communicate with their friends at ALL TIMES, including while at school, in the car with parents, in movie theatres, and even at social gatherings. Basically, its a social life in a phone.
Boy: My blackberry's so cool, I can play games in class.

Girl: PSHHH my sidekick's so much better, I can check my MYSPACE in class!
by danielle rose <3 August 11, 2005
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the phone every myspace addict,scene queen/king,rich bitch kid,young celeb e.g paris hilton,and internet celeb has/wants.
it's a phone for the youth
and the flipping action is real sweet
dude without sidekick "omg what the hell is that?"
dude with sidekick "yo its a sidekick dawg!"
by Mayumi April 12, 2007
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t-mobile (danger) sidekick.
Popular PDA phone.
the t-mobile sidekick is lindsay lohan's favorite cell phone.
by Gaunt911 August 7, 2004
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