turn up one's toes
Die, as in He turned up his toes last week. This expression alludes to the position of the toes when one lies flat on one's back without moving. It may be obsolescent. [Mid-1800s]
The American Heritage® Idioms Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.