Selfie shot from the side at an angle so it looks like somebody else took that picture. Main purpose of the thirdie is to create the illusion the person who took the picture is not alone. Idea of the thirdie comes from the german electro (rap) producer Jonas Platin. His corresponding song to the selfie variant has the same name.
Jonas: "Fuck that's a hot girl on insta"
Jakob: "Send her a good pic dude"
Jonas: "K dude, come over here, I am gonna take a thirdie so it looks like the entire gang is in my crib"
by beggarboy August 11, 2017
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Thirdies can't get enough of DBZ, God of War, Race with Ryan, etc. so it's not surprising they're immune to LiveLeak.
by ParadiseHotel51 July 26, 2022
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Apparently, the orthographic representation for the number "30," especially for those who are not aware of the existence of "thirty."

Related to the use of "fiddy."
I better be getting my thirdy dollars today.
by balticslander August 5, 2014
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The BEST guy you could possibly meet. He is adorable, smart, and very clingy. He makes sure that you feel loved and adored by the end of the day. He can sometimes be very annoying but he always makes up for it. THE BEST BOYFRIEND EVER!!
THIRDY IS A VERY CLINGY GUY
by 9r4c3y May 16, 2022
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A selfie that was taken from the side. It looks like someone else shot the photo.
Look at this Thirdie. He better gets some friends.
by Jonas Platin February 6, 2018
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Similar to "half on" but with more expressed arousal. Can be caused by decreased lack of arousal from anxiety or from incomplete arousal (as in the case of a rodeo).
As I was frantically losing my hard-on, I saved it and maintained a two-thirdy. Whew! That was close.
by Jeremy Spenis June 21, 2010
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A real cool ass dude, somebody who keeps it real, looks out for they homies, and is a total badass
by DreazyDraco March 17, 2022
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