Not necessarily a joke but funny all the same.
I have a robotic vacuum and it reminds me a lot of my ex-wife.
The instant I pick the thing up it says "unit is not on the floor" ....no shit!
When I turn it over and remove the dust box it says "dust box removed from the unit" ..... no shit!
When I push the start button the remote it says "start cleaning" ..... no shit!
If I would bump my head, me ex would say "be careful" .... No shit!
If I would mis-step or stumble my ex would say "watch where you're going" ..... No shit!
If I would take a bite of hot food and react to it, she would say "careful, that's hot" .... No shit!