Do you ever get this when doing Millitry Press?

When going very heavy in Millitry Press do you ever get the feeling that your balls feel like they are going to pop out. I only feel this when going heavy.
I have found that i get this probelm only when doing them with a regular barbell, i tried it on the smith machine and didnt feel it at all. Even so i will not start using the smith machine.
I told a guy at the gym this and he said something about hernia, so i just smiled and walked away, i didnt have a clue what he was talking about.

Actually - Yes. I had one of my berries go north just today. I was on my 3rd set of standing military with 135# and on about the 5th rep, nut #1 chose to tunnel back into my abdomen. Didn’t feel anything after I stopped but very concerning.