“Wet at the back of the ears” began gaining a much broader reputation in the starting of the 20th century, as it all started to be featured in publications, novels, in addition to theater performs and later films, frequently related to the Wild West.
Its reputation didn’t forestall rising till the 2000’s, and it’s nonetheless quite prevalent in recent contexts.
“Wet at the back of the ears” used to be first outlined on City Dictionary on February 14th, 2006.