14
When one insults someone, whilst simultaneously insulting any number of other people; an add-on burn

me(to noob)-Yeah your sister's a slut, and your mom's not lookin' to kosher right now either.
my buddy-sweet sideburn on that noob.
by shawn666 April 13, 2008
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15
Monstrosities of nature that brain-challenged guys grow because they think that girls find them sexy. Men with these are often single.
"These sideburns are lady-magnets."
"...No. No they're not."
by WHSMB January 11, 2009
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16
When girls shave two landing strips into their pubes.... looks like sidburns
"Dude, I could see her bright red sideburns through her white shorts!"
by Shmelgs October 28, 2007
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17
To be a guy and fuck a girl who has more facial hair then yourself.
Skyler: dude you fucked a sideburns thats discusting. you better have been intoxicated you ickle slut.
by DoUNoTylrDurden April 10, 2005
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18
Hair that grows down the side of the legs from a bushy womans vagina
Did you see that sexy girl in the bikini? Yes did you see them sideburns
by Stretchnutzz87 October 28, 2015
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