The video of the lady was long and not funny- sweet, a little weird, in my opinion-
YouTube - Clown Phobia (Coulrophobia)
This one, which came up as a related one- is shorter, funnier- but, yeah, the clown creeped me out a little bit too.
I think a clown definitely needs to only approach people who want to be approached, because WHOA, rude, overfriendly strangers ARE SCARY!!!