The worst thing about the use of "golf/golfed/golfing" as an active verb, rather than "play golf/played golf/playing golf" is that it negates the use of the word "play." It's crucial that the sense of play be tied to the activity of golf in order to remind us that it is a game, and that it is supposed to be fun.
If someone says, "I golfed yesterday," it's not implied that it was a playful activity. That's a depressing notion to me.
FYI, expressions like "I really golfed my ball today" are colloquial in nature, so they're exceptions that prove the rule. The rhetorical strength of that usage relies on it being used to wink at the fact that the speaker knows that that's not the way to talk seriously about the playing of the game. If there's no irony, then it's not amusing - it's just incorrect.