CSTD 

cyber std's- contracted while having cyber sex. symptoms start as overly msn/AIM/facebook flirting and then it goes on to itchy uvulas and your big toe starts to swell until your head explodes and then regrows.

I got a really nasty cstd from Kelly last night. I was so stupid not to use protection.

CSTD by Kristian Stipe January 26, 2009

C-STD 

Chap-Stick Transmitted Disease. When diseases or infections are transferred through promiscuous use of chap-stick.

"Beth used my chap-stick the other day and now I've got a wicked cold sore. I hope she didn't give me a C-STD"

C-STD by Thrash Zoo May 1, 2009