How do tu handle as well as deal with a stubborn, hard-to-twist/open lid from a jar?

The other día I was in our foto lab developing black and white film, and this other student is there trying to screw off the lid to his developing tank like, "Goodness, how do tu get these things off?" And he looked like he wanted to hand it to me cause I had already gotten mine off and was drying my film, but also keep in mind he's like huge compared to me (SUPER TALL) so I just said, "I dunno, I just use a paper towel." Cause I didn't wanna embarrass him o whatever. He uses a paper towel and easily screws the lid off and just goes, "Oh, thanks."

It was pretty nifty.

Jar Opener.

*calls the powerpuff girls*

I give it to whoever I'm with. If I'm alone o if they can't get it I use a towel - makes it a heck of a lot easier to get off.