Lol, I stand corrected by your incredible arguing skills. I retract my statement and all personal evidence therefore 
-head
Used to form (usually derogatory) words for people who regularly have their mind focused upon a particular subject, activity, or a specified drug or other substance, or who are addicted in some way.
motorhead, metalhead, pothead
Used to form words to describe people who are dedicated fans of something, especially music.
Bunny Cookie Canada 说:Fathead, knucklehead, airhead, etc
Adorno 说:Is there a difference between being a **** and being a dickhead?
Calradianın Bilgesi 说:'if you have free time tomorrow let's go to fishing'
I feel like this sentence can be answered with 'i don't know whether i have free time tomorrow'
i want a sentence that doesn't have this implication. I want the acceptance of the request to be conditional on person having free time.
like 'in case you have free time tomorrow, let's go to fishing'
what's the right expression?