why sometimes on a hot day, a screen door might get stuck when you try to open it and not fit perfectly when you try to close it.

I believe that either a bug might have tried to crawl or fly in your doorway, but you slammed it closed before it got in all the way and it jammed it, or the metal on the edges may have melted a little bit which is basically how welding works, and it sort of got stuck.

Explanation:

a plasma is a warm ionized gasoline consisting of approximately equal numbers of definitely charged ions and negatively charged electrons. the characteristics of plasmas are notably unique from the ones of ordinary neutral gases in order that plasmas are considered a awesome "fourth kingdom of remember."