Sex with a girl that is really sick. Like she has a 105 degree fever which then in turn morphs both of you into zombies.
L-man did you bang her?
G-yeah bro she was infectious.
by ToastTower January 21, 2015
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- A smile so amazing that once seen, causes those looking to instantly smile as well

- See "Aubrey Drake Graham"
He has an infectious smile!
by bdflakjeoiajgnoaekjpwo June 12, 2011
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When someone with a great smile smiles and causes others to smile just because of their smile.
Darren's teeth look so good that I just want to smile. He has such an infectious smile
by quest224 August 16, 2010
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A young male usually named Caleb who hands out herpes like raffle tickets. Has the alour of black rotted teeth and being a ginger kid. Basically a worthless person who has to depend on his girlfriend for money. A absolute failure at life
Have you met Caleb he's such a infectious troll. He should be the Valtrex poster boy but they wanted someone with teeth.
by Dipshit 468 February 10, 2022
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A highly contagious, infectious woobstick. Can be caught by a human, known as woobitis.
I tried to take Barney to the doctor, but he instead impaled my earhole with his infectious woobstick and refused to go.
by limpychicken June 12, 2019
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A euphemism for "herpes" in personal ads.

see also, contagious smile
I have herpes, so I only look for personal ads that say "infectious smile".
by FredDill August 19, 2010
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a) This is a curse that all gingers carry. It is curable with some dye, a muzzle, and some garlic.

b) This refers to all gingers, especially ones that are loud and annoying.
a) Ispy something red and it is an Infectious substance...
Oh its that ginger in the front row....

b) Hey Steve, stay away from katie shes an infectious substance!!
by grandazzle!!! June 28, 2011
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