An amalgamation of the slang word based, meaning something you agree with, and the slang word based pilled, which is a combination of red pilled and based.
Hence, based and based-pilled.
Person 1: did you buy dairy free cookies?
Person 2: yes.
Person 1: Based and based-pilled.
17๐ 8๐
When something is based-pilled, it is a joke used by combining the slang word based, and the รขยยred pilledรขยย slang first used in right wing subreddits.
Person 1: Hey, did you get pizza with sausage or pepperoni?
Person 2: I got pepperoni on half, and sausage on the other as Person 3 likes sausage.
Person 3: based-pilled