Besides being a noun, is the word "golf" a verb?

My family are rabid golfers. They would say they golfed all weeked, past tense, as a verb, and they'd say they're going to golf, future, as a verb. And that they golf as a hobby.
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Thanks dude!!!
JuanZZZThanks dude!!!
Just so you know, the word "dude" is very informal and as far as I know, is only used frequently (and in a serious manner) by young people in Southern California.