Loafing, to invade someones space with your body, or possessions.
Loafer, to be the one loafing.
"Dude your loafing all over me!" Justin complained.
"Oh, sorry." Jim replies, rolling back over.
"Hey buddy, I decided to stock your cupboards with my tampons. So I don't have to keep bringing them over one by one."said Susan.
"Wow, I just can't believe you some times! You are the biggest loafer ever !"