Someone is a "Chank" when they do something they already did easily before, but in a really bad/stupid way.
Agustín: Sing this song you already sang before.
Facundo: *makes a mistake in the beginning*
Elían: Facundo is such a Chank!
Facundo: *makes a mistake in the beginning*
Elían: Facundo is such a Chank!
by elpanita May 26, 2022