You'll shoot your eye out!
True story: My Dad born in 1927 received his Daisy when he was about 10, his youngest brother born in 1934, a few years later with their middle brother, 1930, were playing "tag" with it. It just so happened that the youngest had the air rifle and my Dad was the target. Dad got hit on the bridge of his nose and ended up with black eyes. He was wearing glasses and assumed that they saved his vision. 50 years later, while taking X-rays, the Doctor noticed a calcified BB just below the right eye. A short time later it was removed and the mystery of the missing BB was solved.
WR