2 definitions by Professor Foreplay

An acronym for the phrase "I fucking love you." Typically used by prisoners receiving hand jobs under the table during visiting hours, horny 8th graders and fans of the 80's rock band Whitesnake.
Erin, IFLY. Meet me in the first floor bathroom so I can finger you. Or,

I can't believe you traded an 8-ball for third row Ratt tickets. IFLY!
by Professor Foreplay May 03, 2009
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An acronym for the phrase "I fucking love you too." The proper response to the acronym IFLY.
Thanks for jacking me off during Top Gun. IFLY2.
by Professor Foreplay May 03, 2009
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