yeah, pretty routine stuff, i'd guess, judging from guys i've talked to. A lot of guys try it once, just out of curiosity. I kind of have a thing for it, and i've come to enjoy the taste of my own jizm, tho at first, i didn't care for it. But i still felt drawn to eating it.
How i came to it might be interesting. My older brother used to do it (still does sometimes), and he encouraged me to do it when i first started jizzing as a way of hiding sperm stains on sheets, etc, from our mom. At first i would just skwirt into my hand and lick it up the way he showed me, but later (on my own) i learned about self-sucking and lifting up my legs to skwirt directly into my own mouth.
At times demonstrating any of these skills has made me quite popular, mostly with other guys. Some old gfs thought it was too weird if i even mentioned it, let alone showed them. One girl was kind of keen on it, but we never hit it off in other ways... And then i got much more into fooling around with guys