There's this guy that always annoys me messes arounds with me and stuff what do i do for him to stop?

That's sexual harassment?

How does he "mess" with you?

beat him up. That's what I would do. Have fun

hmm...have you ever thought of telling an adult?

he could be flirting with you...? have you asked him nicely to stop?

It really depends on the kind of "messing" you're talking about.

run away from him!

maybe he likes you

there is a few way guys can mess with you
1) Touch you in ways you don't lkike
2) Playing or flirting with you
3) Punching you softly and always yell at you ( in a kiddding way )
4) Mess around and writes on your stuff
5) Calls you or IM you a lot.
there are 5 reasons that i think of that means 'messes' with me in a way to me. so think about it and explain it a lil more.

In the word messes. i actually mean that he slapps me on my face. he hits my head.

cuss his ass out

Try asking him nicely to stop. If that doesn't work tell an adult.

Um , what I do is curse him out , REAL bad . Ignoring doesnt work for me.

Stand up for yourself. If he laughs or does anything back, tell an adult. Call him immature and curse a lot. I agree with Emmaliev ^