When you think a girl is attractive, but you can't tell for sure because you are at a distance. It is excusable to be mistaken if you call 50 out.

50 out literally means 50 yards/feet away; you can't tell if a girl is hot or not because you are too far away.
Randall: "Look at that girl. She looks pretty attractive; but we are 50 out."
*10 seconds later*
Matthew: " NOPE! But you can never be sure from 50 out."
by fanboyhunter March 25, 2010
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Thinking someone is pretty attractive from a distance but is actually ugly up close.
"I thought she was hot when i saw her across the parking lot but fell for the 50 yard fake out when i saw her up close"
by Kailn33 March 24, 2008
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