Long, hard orgasm

Today's task for Mistress Anette is making the sex slave so aroused, that he feels one of the longest, most torment orgasms of his life. Her skillful fingers wrap around his erect shaft and she slowly starts to travel up and down him, making wet noises. There were many seconds when the slave felt he can hold out no longer, but when Anette finally let him come, his rough orgasm lasted for 20 seconds.