Greek to me

There is also a video series called Greek to Me.That's Greek to me or It's (all) Greek to me is an idiom/dead metaphor in English, claiming that an expression is incomprehensible, either due to complexity or imprecision. The expression may be used with respect to verbal expressions with excessive jargon of dialect, mathematics, or science. The metaphor makes reference to the Greek language and the Greek alphabet (either ancient or modern).
See more at Wikipedia.org...

(See it was Greek to me)

idm. เป็นสิ่งที่ฉันไม่เข้าใจ