Used as a discreet way to talk about or plan on smoking pot when in a room full of people. Or telling a friend that you recently came across some a small quanity of pot. You may use Ivysaur or Venusaur depending on how strong or (dank) the weed may be.
"Dude, I caught a BULBASAUR over by that guys house, you wanna meet him it my room later?"
"I'm getting sick of catching BULBASAUR, we need to evolve to an IVYSAUR, and if we can get a VENUSAUR, I'll totally shit a brick!"
"Man, I was chillin' with my BULBASAUR all weekend..."