(one) can't top that(redirected from you cannot top that)
(one) can't top that
One cannot improve upon or surpass something, as in excellence, quality, value, etc. Wow, a whole meal for just $5? Can't top that! Look at that majestic sunrise! Gosh, you can't top that.
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.