Idiom
suit yourself
Theme: SATISFACTION
to do something one's own way; to do something to please oneself.Okay, if you don’t want to do it my way, suit yourself.Take either of the books that you like. Suit yourself. I'll read the other one.
Idiom
suit yourselfsuit (yourself)
to be satisfactory for you.He was always able to arrange things to suit himself.
Usage notes: often showing you are annoyed:
Suit yourself — as you usually do.