Oh gosh. Jacob is not one to feel self-conscious very often, but he’d definitely feel silly trying something like that! Even so, he is committed to the cause and would want to train his skills however he needed to, so he might try it.
Of course, if the tiny Winchesters were off to the side swearing it would work while also trying not to laugh … well, he’d wonder if it was a valid technique at all! They’d get poked for sure.