I'm awake; I'm alert; I know what's happening.
wide awake
Awake and very alert; vigilant, watchful.
my foot
Indicates disapproval, disregard, disdain, disgust or disbelief.
my bad
My fault; mea culpa.
my eye
Expression of disapproval, disregard, disdain, disgust, or disbelief.
my word
An expression of surprise.
my way or the highway
Your only options are to either do as I say or leave.