WD40 WTF

My tubes were in the freezer in this weird plastic jarcup thing.

Me: Bob, can you open this lid? Is there a trick? Or is it just frozen?
Bob: Sure. *opens it*
Lili: My apartment window...is difficult to open, so I had to buy
special gloves. They are made of the plastic with lots of fiber. I
put them on and I can slide the window open or close.
Bob: Is it metal or wood?
Lili: metal
Bob: You may need some lubricant. *grabs bottle* Get some of this.
Lili: W...D....40? I just need a little bit?
Bob: Yes
Lili: Any store has it?
Bob: Yes - Walgreens, grocery store
Lili: Ok. I will try that.