I'm Just wandering what he wanted you to do with the bike pump.
He couldn't have been trying to milk you since he asked for the pump first then the ink stick
That truly was a creepy chat.
I wonder what he would have asked if you had gone further you should have just lied and said yeah I put the stick in my breast and that you found a bike pump to at least see what this creep had in mind.  
And he calls this pleasure.