[Spock meets Coulson's smile with a Vulcan version... his mouth twitches in what could be deemed as a half-smile.]

If this is indeed apart of what humans call 'affection', then I would indeed be interested in assisting you with the prank itself. Mister Barton and I were conversing recently... and he mentioned that I should...'expand my horizons'...

As for obtaining the foil... I am amenable to assisting you with that as well.