Really quick thought...

Cum tastes different if you let air get to it. If you keep your mouth over the head of his cock when he cums you can barely feel/taste it. If you lick it after he spewed on his or your parts it's properties change. The longer it's "aired", the more "different" it will taste.

I happen to like the taste and texture of cum. Reminds me of thin pudding at times.

Oh...Hey...try eating slightly warm/water thinned, vanilla pudding before he shoots his load. YUM! Not that cum tastes like vanilla but the color and texture might be the same.

Practice makes perfect!

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Minds are like parachutes. They only work when they are open.

~Thomas Dewar~