This just happened a few minutes ago on my job. I am always cold, so I wear my letter jacket to work. A guy who is not a medical student approaches me.
Him: Are you a part of the stomp program? (tried to stomp)
Me:
Him: Are you a Alpha or a Omega?
Me:

No, I'm a Delta. Alpha and Omegas are guys.
Him: That means that Alphas and Omegas are guys and Deltas are girls?
Me: Yes.
Incidents like that don't make me want to wear my jacket in public.