ie, someone who spends 80% of his life trying to get action, even off minging fat girls, whilst completely neglecting his friends.
Boy: "He's over at margarets"
Teacher. "f*cking SCHWEFF!"
Content to merely hang around them all the time. A sort of straight gal pal. His schweffing often alienates him from his male counterparts.
'Yeah, That guy is such a schweff!'
also known as a rech.
'i stayed at a friends'
'did you stay over at sarah's?'
'yeh but nothing happened, but i walked across the room whilst she was on skype to her boyfriend'
'you massive schweff!!'
BOY TWO "yeah but sarge is a proper schweff, never gets any action"
Schweff's Friend: Look mate, she doesn't like you as in she wants to fuck you. She likes you because you are a schweff.