I looked at all these suggestions, and I'm obviously a big fat nicotine slob.
A fresh Anejo #49 and a fresh El Original Toro Maduro are probably enough to sit him on his ass. El Cobre, not so much unless it's nice and wet.
An Oliva S or Oliva O, barnyard fresh and soaking wet should make him chunk.
I've only ever got a nic buzz three times. Once when I was about 10 years old on Copenhagen, once on a fresh Anejo, and once on fresh Cohiba cigarettes. Had to smoke three back to back, but I got gooned. It was awesome.