Top definition
someone who secretly watches something. like they're a fly on the wall and you don't notice them.
carlos knows that rosita's baby is really chico's thanks to that fly on the wall.
by tom March 02, 2004
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2
An unseen or unnoticed presence in a situation.
"Fly on the wall documentary" meaning a documentary where the cameras go unnoticed by the subject of the film.
"I wish I had been a fly on the wall at that meeting" meaning I wish I could have sat in unseen on that meeting.
by djsmythe March 01, 2004
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3
to be present to listen/see what goes on behind closed doors, that is, in a room closed to the media or other non-participants
1. I'd like to be a fly on the wall when that (distrusted) union steward is making deals with management all on his own

2. I'd like to be a fly on the wall when my ex and her lawyer are talking about our separation agreement

3. I'd like to be a fly on the wall of suite 401 of the Best Western when my ex is visiting her boyfriend who's up here on business
by Jake March 01, 2004
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4
I think there was a fly on the wall when I told mom about the Nigerian email that I had to delete.
by The Return of Light Joker January 23, 2008
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5
When a male does a headstand, naked, against a wall and his penis and balls resembles the facial configurations of a fly or mosquito. You can also flail your legs to make it look like your fly has arms. Like a wacky, waving, inflatable, arm-flailing tube man.
My son keeps doing the fly on the wall whenever he gets out of the shower.
by Swaggasaurus April 20, 2016
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6
a documentary that follows you around
i cant believe that fly-on-the-wall documentary caught me picking my nose
by hayley yates December 10, 2003
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7
the receiver of the screenshots of a conversation. 2016
"Hold up, you're gonna be the fly on the wall."
by Brina1014 September 12, 2016
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