Creepy guy in cl confusing me?

So, in science cl there is this guy who sits across from me. He pretty much acts immature, making dirty jokes, etc. Well, he got up to sharpen his pencil, and when he was walking back, he brushed his hand through a little bit of my hair. At first I thought it was an accident. But the next time he got up and came back, he brushed the side of mey cheek and said "Oop, gotcha!" all soft. That freaked me out. He then stuck his leg out under the table and rubbed it against my leg. I said "Stop it, or I'll kick you." He stopped. I am very confused. Was he just trying to freak me out, or, as a friend suggested, was he trying to flirt? I have no clue what to make of this!