considering the infinite amount of variables(including location) that go into 'doing something' it becomes pretty clear that nobody can ever be doing the 'exact' same thing as you.
if you mean like, if i'm taking a shit, do i ever go
'holy shit i wonder how many other people are squatting one out right now?'
then,
no.
no, not really.
there are countless better ways to realize you are insignificant