I saw this old man touching himself.?

i went to my new office today. n i was waiting in the room whn this old clerk was standing in another room peepin and when saw prply he was feeling himself. but looking smwhere else but in btw he wud look at me.i acted as if i never saw him . but im kinda freaked cos he was ther e doin tht for a long time.! what shud i do whn smhn lik tht hapeens aga?!