Absinthe, hmmmm, I wouldn't recommend it. A high-vodka like Grey Goose or Absolut are good options for your first drink, as higher end vodkas do tend to go down like water.
If you go beer, I would suggest a "green beer", like Rolling Rock. It's pretty cheap and has a taste to it without being overpowering to a first timer. Personally though, I enjoy Sierra Nevada Pale Ale.
Also, might I suggest weed?