Due to one editor being on vacation this week, we’re going to imitate the comics by repeating some classics. This one is from June 2018, by Bill
B.A.: Okay, so… a comic about the future that uses what’s already a Geezer reference (Blockbuster/VHS tapes). But I still don’t understand what the joke’s supposed to be.
Though the Cow pinch-hitting for the Squirrel does give us a passable “Oy”.
Comics I Don't Understand 
In a video rental context, “In the future, be kind and rewind” means next time you rent a video, make sure it’s rewound to the beginning of the tape before bringing it back to us.
In a time machine rental context, “In the future? Please be kind: Rewind” means if you’re from the past make sure you return to your original time period before returning the machine.
I would say Powers has it, though I also thought if you were going to the future, “rewind” might mean “send the machine back to us.”
I have a problem with “Time Machine” & “Rental. If you bring it back yesterday, do they owe you? If you come back a withered old man in 10 minutes, how much do they charge?
Downpuppy:
Bring it back yesterday breaks the “Please rewind” request, you are probably charged for it, just like bringing a car back with less than a full tank!
Also, more expensive rental equipment comes with hour meters, so you are charged by the amount of time the equipment was run. Time machines would be the perfect application for these!
I wouldn’t overthink it.