[CuriousGirl]

Sure I have, mostly with other females, but also with two men I'm very fond of. One of them is a eunuch, BTW, but can manage a semi-rigid stiffie now and then and can cum when semi-stiff or totally floppy, even though I usually have to suck and/or "buzz" his little penis to get him over the top.
The castrated one CAN occasionally manage to penetrate. His little weenie is ideally sized to invade my pussy or the other port-of-entry and the latter really makes me cum soooooo good. Well, sometimes.
Another difference between the two is that the normal one could legitimately called The First National Sperm Bank where as the other produces a few dribbles clear and thin "tea".
Vive La Difference!