Ha! I find it so weird when people tell you they are going to ask you something in the future or tell you something in the future.
Why say a thing? Eh? Silly dude.
Next time he does it I'd brush him off. "Ah, cool, well, you can tell me when the time comes. Now about that weather today...."
On a related tangeant - what is truly awful is when folks say things like this to kids...bad habit of the mouth to get into. Hard to take what is said seriously.
p.s. Did he bring you back anything?