JoJo's Bizarre Adventure Part 4 - Diamond is Unbreakable - Digital Colored Comics - Vol. 6 Ch. 50 - I Found Something Dangerous! - Part 1

[MangaDex]

 

[SSS26032002]

He underestimates a hamon user.

 

[Mandra174]

He might be a little senile but it's not that bad Josuke

 

[octoroks]

baby stand

 

[shreyas16]

Glad to see he's still got it.

 

[antioniobrando]

Spoiler

shizuka, the joestar that never got a part

 

[diorbratz]

ancient joseph >

 

[JKiller]

Oh how I missed Hermit Purple

 

[Aishwarya]

Spoiler

So this arc hints that Joseph might not actually be senile, but pretends to be for some reason. I mean, this guy is a genius who fools around to catch his opponents off guard.