Not to brag, but you ain't hitting me with a jab. Not a right hand, either. Ask my ex-girlfriend.
Left hooks...another story. If you hook to my body then to my head, ain't hitting me. But a pot-shot left hook, especially in close...I've eaten too many of those when I thought I was unhittable.
And, I should point out, if you hit me with something and I can't figure out how or why you hit me with it, you'll hit me twice more while I'm trying to figure it out.