Alone: sometimes eat it. Definitely always lick my precum. It's incredibly sweet. With my gf: One or both of us usually eats it. Cum-kissing is the best.
I let the cum go wherever it goes. Mostly that's onto myself, like my crotch and thigh, or sometimes my stomach. But once in a while when I'm stroking and I'm able to build up to a really strong climax or if I'm playing with it furiously while soft, the cum flies all over and it's not rare to get it on my bed, bicep and even as high as my upper chest. Once I'm done, I wipe it off my penis and hand as best I can with a few tissues then wash my hands and wipe the rest of it off my body in the bathroom with toilet paper and wet wipes.
Most times, I just clean up with a tissue. A few times a year, I catch most of it and lap it up out of my hand.
I usually fire into a paper towel. However, my desk is surrounded by hardwood floors. So, occasionally I let it fly and wipe it up latter. I hope CSI never checks the room with Luminol.
I love cumin in my hand and I will lick it all up off my hand and fingers. And I do every time I masturbate or use my toys and that every day at least 5 to 8 times a day.