OK, it is obviously a riddle of some kind. So I will take a lame stab at it. is it Customers who blow hot air, talking out of their ass? (They call and then never show up so it is just a lot of air)
Or, to paraphrase Elvis, is it "too much talk and not enough action?"
I give up. Good thing they had arts and crafts in HS so I could graduate.
WTF?