once in a while, when I masturbate. And not big at all.

I used to like the feeling of a finger or small dildo when I jerked off and would pull it out when I came. Then I used bigger dildos and would keep it in while I came. It was a totally different orgasm. It was like the cum floodgates were opened. If I kept on fucking myself while cumming, the stimulation of the head of the dildo on my prostate and the added anal stimulation, would keep me cumming and cumming. I don't like too big, or too small. It just has to hit the right spots.