**DISCLAIMER >> I realize this behavior would be very unsafe, and am not recommending it beyond the bounds of trust between two responsible men who are tested regularly and practice safe sex, and/or are in a trusting relationship.**
I had a similar experience in a menage a trois. Man "A" ejaculated on my member, and I pumped it into Man "B". Does that count? I suppose I could be persuaded to do it again, in the right (read: safe) group.
