Happens to me all the time...and on all aircraft too. There were some memborable ones..back in 83 on A DC 10 we came in so hard a tire blew. In 99 I was on an LH 747 that landed so hard the 02 masks fell out and a few bins opened...and we bounced. I would estimate that hard landings and bounces happen 1 of 3 flights for me, and I fly 2 times a week.