My first client, back when I was 22, was interested in "Snowbaling", which, please correct me if I am wrong, this is the sexual term used for when cum is swapped between mouths.
In theory, of course, I had no problem with preforming this act. It's cum. I swallow that down faster than a shot glass of Jager. So, first appointment comes and we are going at it. He is sitting on the couch and I'm giving him the grand tour of my mouth and he tells me, "I'm cumming, I want you to kiss me with it still in your mouth." Thumbs up from me.
What shot into my mouth had to be the grosses thing I have EVER tasted in my life. The amount of BITTER/SOUR. I can't express ya'll how badly this cum tasted.
I'm not a quitter though, so ya girl got up and preformed the act. WHAT I LOVED, was his face. The look of fear and regret in his eyes. Needless to say, he didn't want do it again.
Would I do it again? Depends.