Amp "timing" ?


I was reading someone raving about the impeccable "timing" of their high-end amp this morning.  I have heard this term tossed around several times recently in my dive back into highish-end audio. 

Can someone please explain what is meant by this term?  Is it snake-oil or confirmation bias?  I just don't understand how a human  can hear  a timing difference of a soundwave unless it's a 2nd+ order reflection.  

Thoughts?
dtximages
I have a Linn now, but my point was that those specific tables had absolutely the same speed, and the music presented was in identical pitch (which I'm extremely sensitive to, as are most people if they know it or not). Maybe the dealer should have been using a crappier table for comparison than an expensive direct drive Denon. I don't think "prat" is a particularly useful term and am glad it's seemingly fallen out of fashion as I rarely see it anymore, even in UK audio mags.
I was doing some tube rolling. I had a bunch in the phono pre and it sounded a little clearer on the night. Few days later, the sound wasn't great. Played an album, "Friends - Manifest!" Not great. Flat, musically all over the place. Put tubes back. Lots better. Everything snapped into focus including timing. 
@tomic601 : " the swing of a sweet light double"

I doubt many people here have any idea what that is referring to.
@n80 well with you, there are at least three of us that will get it....

nobody as yet bit on the Dylan, so my expectations are low...