One who watches the every move of a specific person that they show a very large amount of interest in. Stalking can include, but is not limited to;
-Watching the person sleep
-Watching the person bathe
-Odd uses of Jelly donuts or pizza
-Standing outside of their bedroom window even in the worst of conditions
-" Hey Rob, There's a girl outside that window just staring in at you. It's kind of freaking me out."
-"Oh, her? Don't worry about it, shes's just my stalker, dude."