wet willie noun an act in which a spit-moistened finger is forced into a victim’s ear and twisted US
BART: I bet ya don’t know what a Wet Willie is. LAURA: Is it this? (Gives Bart a Wet Willie) KEARNEY: Hey Baby! How bout putting your finger in my ear? — Conan O’Brien, TheSimpsons, 12 November 1992
— Chris Lewis, TheDictionaryofPlaygroundSlang, p. 253, 2003