dry behind the ears
see under wet behind the ears.
The Mystery Behind April’s NameMark Twain once wrote: “This is the day upon which we are reminded of what we are on the other three hundred and sixty-four.” Twain’s referring to the first day of April or, as it’s often known, April Fools’ Day. While the first day of the fourth month of the year is sure to bring plenty of shenanigans (will you be the perpetrator or the …
The American Heritage® Idioms Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.