This also applies to smexy. To be sexy is to arouse interest (even unintentionally), but to be smexy is to arouse sexual interest in a pointedly lewd manner.
The images conjured in my mind by the story were so smexy I got a nosebleed.
girlfreind-wanna have sex?
boyfreind- dont say that they will ban you on zwinky
girlfreind-oh ya wanna have smex?
boyfreind- oooohhh ya!
Gaara: I cannot agree. My secret love is for-
Rei: *glomps him and shuts him up* no, tell me after we fuck. Then I'll write a really smexy fanfic!!
23:05 iMaHeRosPunK: and make the sticky smex with me
23:06 benspectorLITE: SMEX = Small Explorer
23:06 TehKaze: lol!
23:07 iMaHeRosPunK: =*(
with a 'm'
which stands for monkey
which led to the development of AIDS
any sex in which you contract AIDS
-dude i just had smex last night
-dude i didn't know u were into bestiality
-i shouldn't have had that smex
-yea, thanks for AIDS
-dude i had smex last night
-dude that sucks, when'd you find out it was smex and not sex?