Once...Twice....Three times a donkey?

[Romulus141]

Without a read beyond his stats, I think I'm going to call on the river after a third donk. The flop and turn raises I think are fine, you certainly have the equity, but by the river, I'm starting to get worried he has trips, the flush, or a set. He may also have two-pair, but without a read, I can't be too sure. Call and hope for the best.