Greek to Me
DEFINITION: If something doesn't make sense to you (i.e., you don't understand), you say "it's Greek to me" because most native English speakers do not speak Greek (another thing they would not understand).

EXAMPLE: "Don't look at me! HTML language is Greek to me!"
"Thank you so much for the polishing suggestions! I was not impressed with the work done on the résumé in the past. This looks so much better! "
Marcia Veatch
Iowa City, Iowa