the sly amy Share definition Flag When your wife convinces you she isnt cheating but you find out she's been cheating with EVERYONE. Ugh I found out everyone at the Christmas party slept with Amy even though she said they didn't. I got the sly Amy. the sly amy by Thelargestlarge May 5, 2016 0 0 Get merch Get the the sly amy mug. Buy Now — $32.95 See more merch