To 'sign in' on your email or a site like miniclip.com and other websites you need an account for.
For an email, to 'sign in', you put in your email address, and your password, and then you click the sign in, or Log in, button. Another way to say sign in, is Log in. The opposite of Sign in/Log in, is Sign Out/Log Out.
"What are you doing?"
"Signing in to my email"
"Whats that?"
"I am typing in my email and password and then going to press a button"
"Cool, can I 'sign in' after you?!"
by Emo child</3 May 24, 2008
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1. A 1992 hit single from the Swedish pop band Ace of Base
2. The 1992 album from the Swedish pop band Ace of Base.
3. An ankh in the 1992 music video (The Sign) from the Swedish pop band Ace of Bass
I saw the sign, and it opened up my eyes, I saw the sign.

See also: ankh
by ToxicArtichoke November 24, 2006
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A term used to state a claim of dominance of a female being through the act of sexual intercourse. The term refers to the metaphoric description that the male has "signed" his name on any chosen part of that particular female's body, primarily the stomach area or lower back, with his ejaculatory fluid.
"Nah man, its all good, I already signed that shit months ago at that one party."

"Dude, you better sign that shit tonight"

"Good luck with signing her up after taking her out to dinner"
by TWiggles20 April 29, 2008
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somtimes used on communities like myspace
if you like someone you might make them a sign.
This involves taking a picture of youself holding a piece of paper with a message on it for that person for them to display on their profile.
if you write, " i love matthew" on a piece of paper and take a picture and send it to that person. this is called a sign.
by xxxJJxxx April 23, 2006
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A message indicating that a user from a network has joined/returned.

Something you really want to see when it is next to your girlfriend's/boyfriend's screen name.
\Tina signed on
Tom: OH HEY BABY!!!
Tom: welcome back!!!!
Tina: hu iz dis?
Tom: it's your boy!!!
Tina: rite......
\Tina is away
Tom: ****
by Godknown March 25, 2006
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1. that nasty feeling in your stomach right before diarrhea

2.the act of shitting your brains out
damn, i got signs...where the hell is a bathroom!
by shnoog December 3, 2004
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