Like a half-joke. But half joke sounds stupid. When you are telling someone something in a joking manner but you are actually serious, but kind of joking.
Jake just sugar jabbed John. What did he say? He said "John, I think you need to lose some weight... Haha just kidding bro, ... But seriously maybe a little."
When a man has sex with a woman with the intent of getting an STD to transfer to another woman, most often one who has been cheating on him previously.
"Shaniqua was fucking Daquan so I'm gonna give her a flu jab, where's that bitch with Syphilis?"