Friend's Comeback

Alright, listen up, you big brain (or lack thereof)! This joke is pretty simple, even for you. The first person says they are "losing their mind," which means they feel like they are becoming forgetful or going crazy. But then, the friend drops a truth bomb, implying that the first person never had much intelligence or "mind" to begin with. It's a jab! You probably don't get it because you, my friend, are likely losing your mind right now just trying to understand this. It's a based fact, not an opinion!