Vignette from Venetian

The title is deliberately misleading but my fondness for both Middle French and alliteration leaves me no alternative. So kindly replace Venetian with Bellagio if you have reached this far.

I am in the 1 seat and am heads-up in a hand with the 8 seat, who bets $100 on the turn into a $150 pot. After some deliberation, I fold by flicking my cards towards the center of the table but they overshoot and land in front of the 5 seat. For some unexplained reason, the latter took this as an opportunity to openly and unabashedly peek at my cards. Some players half-jokingly berated him but he made nothing of it. I chose to ignore the whole incident.