up to the mark

To be good enough.

Her latest batch of work just isn't up to the mark.

up to the maker's mark

To be at the apogee of the sexual act; to be fully inserted into one's partner. Said to be from the data plate found on the sides of various pieces of hydraulic drilling equipment. To be up to your nuts in guts, to bottom out.

Chuck was up to the maker's mark in Cindy last night - that must explain why she's walking funny today. - Sol R.

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