The Head of Sixth Form at my secondary school once told that balloon joke at an assembly. I have absolutely no idea why.

I would quite like to get a map and write 'You are here' all over it, just to make that 'existential map' joke even more hilariously rubbish by clearly having spent more time preparing it than it deserves.

'What's that?'
'Oh, it's my existential map.'
'...you really wrote all those "you are here"s just so you could say that?'