He's a friend of Kevin's

1. Spending long period's of time home alone (euphamism for masturbation)
2. Insenuatiing/Calling someone a wanker.

1.
Q. Where's Jonny? I havne't seen him in a while.

A I hear he's made friend's with Kevin.

2.
Q. Have you met Jonny?
A. No, but I heard he's a friend of kevin's

He's a friend of Kevin's

1. Spending long period's of time home alone (euphamism for masturbation)
2. Insenuatiing/Calling someone a wanker.

1.
Q. Where's Jonny? I havne't seen him in a while.

A I hear he's made friend's with Kevin.

2.
Q. Have you met Jonny?
A. No, but I heard he's a friend of kevin's