to be as a fly and fly around the world and not be seen
But you die in 24 hours so be sly and you will mc fly
the sly mc fly went to paris and was on its way to china but was splated by the airplane of Your mom
by justin adona January 29, 2008
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A completely ironic phrase commonly used to define someone who does something mildly cool or impressive. This phrase should never be used seriously, as it ruins the joke, and makes you look retarded.
Lil cheggos, you sly dog you!
by DudeishBroski November 14, 2018
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When attempting to sit next to a particular person in a University of Sydney Economics lecture, this move should be undertaken. It involves isolating the person prior to the lecture, then walking up to person in a way that they will not see you (although if that happens, it can't be too bad). Once behind this person, follow them into the Economics lecture, thus following them into the row they decide to sit in, THUS, sitting next to them.
Finito.
Perfecto.
A1: Should I use the sly walking behind her move?
A2: Yes.
by pavmeister April 4, 2011
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The all time ruler of the earth and sexy lady killer, don't cross him or he will cut you down with his twin fire and ice swords. He will be born in the year 3000 and from that point on will rule everything that man has discovered and created. See also God
Holy shit, my caller ID says Sly Vandalspark on it!!
by bill cosby April 2, 2005
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A mating call in gay clubs.

A phrase used to announce excessive homosexuality.
'I'm Sly Jon yeah'
'So you love cock?'
'Hell yeah, Sly Jon all the way.'
by American Tiger Pheasant August 15, 2010
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An alternate, cooo way to order a plain slice of pizza
Let me have 2 plain slys.
by Mittyman April 17, 2009
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Sarah and Chloe are generally cool so they are sly dogs.
by Sistersimon February 4, 2019
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