Messin is not a word in the 2000 most common words in English. Did you mean 'mess'?
The word 'mess' can make people think of dirt, disorder, or something not clean.
Examples:
The kitchen is a mess.
I don't want to mess up my room.
She made a mess with her toys.
Don't mess with my toys!
The whole house was a messin after the party.
I always mess up my room before cleaning it.