friendly uncle 

An unwanted yet forceable insertion performed during holidays by one's fathers brother. aka uncle.

So last Christmas my uncle Benny gave me a friendly uncle leaving me limping for a week.

friendly uncle by FuzzySachel November 21, 2017

freindly uncle 

an uncle that seems nice but fucks you instead

i need to escape from my freindly uncle

freindly uncle by daddys yeeter June 11, 2018