Did Nancy really threaten to shoot Murray&Jonathan d*cks off?

In 5x03 this line: " Hey! If you don’t shut up right now, Santa, I swear to God I will shoot this tracker into your potato sacks. I’m a good enough shot to hit any mark, no matter how small." Did she threaten to shoot their dicks off and implied that Jonathan has small dick? Wow Duffers Brothers really hate Jonathan Byers, his death at this point would be mercy.