Oh, sure thing! Let me know if "your friend" ever needs help with common sense again!
it IS a friend
No no no...
You completely misinterpreted the sarcasm used there.
RBCP wasn't trying to imply that you were lying when you said that it was "your friend" who needed help.
He put quotation marks around "your friend" because that's the grammatically correct thing to do when directly quoting somebody.
Ergo, the joke wasn't about the "your friend" part, but instead about the "common sense" part.
You see, his advice to you was to quit answering unknown calls if you want to avoid prankers.
But you replied with, "OMG THX 4 TEH SUGGESTION RPCB!!! I'LL PASS IT ALONG!!!!" like it was the most 1337z0rest suggestion in the world.
And that made you sound silly because -- as Brad wittingly replied -- that's the "common sense" thing to do.
And . . . Wait, why the heck am I writing all this?
It's so much easier to just call you stupid. Now go away.