OK Im going to give one example then we can all begin a list: You know you/your significant other are potheads when ... You get a bluntwrap stuck to your butt during foreplay
You know you/your significant other are potheads when ... Your girlfriend says "its so long!" and you say "Hell yeah! Lets smoke that bong!" ---ok, its corny but I can't think when I'm not blazed and I'm outta bud!
Hair, make up case, pants, dresser, computer, VCR, DVD player, tampon box, the list goes on and on.. ...pussy .. lol
When every date starts with the 2 of you riding the "route" and burning one. This is really what my girlfriend and i did when i lived with the rents.