to ruin a joke or a conversation by saying something stupid.
daniel: that show was funny as fuk last night yo.
Fernando: yheah man it was super awesome.. like omg i alomost peed in my pants.
Daniel: i wasnt that funny bro..you are such a KAGGER!!
by Pitbullzwifeyy February 5, 2008
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Someone that does something so unbelievable that you have no other words for it.
Bruce makes a full-court shot, blindfolded, on his knees
Bruce's brother: No fucking way, you KAGGER!
by Reggak March 15, 2017
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The aurora one emits having a strong pelvic floor from the result if doing kegel exercises.
The cougars lining up because they see we got kagger, but we kick them to the curb unless they look like coach Robin

That guy oozes kagger. He clearly does his kegels.
by Mickkagger June 11, 2023
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