Maybe Harry keeps throwing things! (6)
I believe the answer is:
potter
'maybe harry' is the definition.
(Harry Potter)
I can't explain the remainder of the clue.
Can you help me to learn more?
(Other definitions for potter that I've seen before include "Work aimlessly" , "Waste time" , "Dabble; dawdle" , "Ceramic worker" , "Maker of ceramic articles" .)