Having subject matter explained to you by someone in their early 20s who assumes they know everything and you nothing. Recipient being older than 29.
20 something: "Actually, water is not wet"
Person who gives no shits:
"Dont Twentysplain me"
20Something: "Actually Control P does that too"
Person who gives no shits:
"Twentysplaining me again brah?"
Person who gives no shits:
"Dont Twentysplain me"
20Something: "Actually Control P does that too"
Person who gives no shits:
"Twentysplaining me again brah?"
by Joe Nofuqs November 3, 2018
Get the Twentysplainmug.