1 definition by xpiratebillx
when you playfully *slap* the back of someone's neck, usually after they make a dumb or obvious statement. saying "BEEF NECK!" is optional while administering the *slap*.
After Bobbi asked me where her keys were, I pointed out they were right in front of her on her desk, and then gave her a BEEF NECK!
by xpiratebillx November 19, 2010