I Messed Up
Meaning/Usage: Used to
tell someone that you made a
mistake
Explanation: This is a
very common phrase. It is
not as bad as "I blew it" but
it also means to make a
mistake. However, "I blew it"
refers to making a big
mistake to lose out on an
opportunity, while "I messed
up" can be used more freely
to indicate any sort of
mistake.