That's a combination of rotting in front of PC all day and overatimulating your eyes with harmful "blue" light and and being shy, so you can't look other people in the eyes with out them watering.
If I had to use my superior intellect and synthesize a reason why this happens . I would say typically in nature looking someone else in the eyes is a sign of aggression, a challenge, a taunt... As an incel you are at the bottom of the power dominance ladder, and you probably have a good grasp of what your place is on the power ladder, which is the very bottom.
I hypothesize that watery eyes, is a evolutionary defense mechanism built in to protect a weak individual... If you are weak, your body automatically prevents you from showing any signs of aggression or dominance in attempt to preserve your existence.... So you know the typical incel trait...walking with your head down, and getting watery eyes when looking at other people.
It never vegan for you son