well i kind of guess if you have to try to be curious then i think it is ok. i have jacked off and done the same . bit kinky but what the hell? have fun..
There is certainly nothing wrong with doing it. As railbender said, it is a bit kinky, but thats not a bad thing. I sometimes do it, and it does help to learn what foods influence the taste of your cum, which can be helpful when trying to get your partner to swallow your load hehe