It seemed every time I held KK, and raised preflop, only 2 things would happen, no callers, or a re-raiser holding AA. In one session, in less then 20 minutes, I held KK and lost to AA twice, to same opponent.
At a 10-person table, the probability is 4.41% or 23:1, the reason it seems to happen a lot is the fact that we play a lot of hands online, it's much quicker then BM casinos, so we see it happen often.