monkey-fart with (something)
To tinker, fiddle, or attempt to use, especially in an ineffectual, clumsy, or inept manner. I monkey-farted with the washing machine all morning long, but I just can't seem to fix the clog in its drainage system. Grandpa's been monkey-farting with that old radio all day, but I doubt he'll get it to work again. Don't go monkey-farting with something you don't know how to use!
in. to waste time; to do something ineffectually or inefficiently. (A blend of monkey around and fart around.) Stop monkey-farting and get over here and get to work. He wasted his time fiddle-farting, and never got the job done.