First of all, this place is any Stoner's paradise. When other stores will offer you a free sample of your choice, Menchie's lets you pick up as many miniature sampling cups as you desire and you could technically "taste" every flavor there and fill up with frozen yogurt for free if you're not inclined to add toppings. But if you're still hungry after giving every flavor a proper try, gaze at the incredible variety of toppings they offer from fruits to peanut butter cups and grated coconut, and start making you own "Best frozen yogurt" ever (Try not to eat too many topping because I'm not sure you're really allowed to "sample" them. Even if you don't want to eat any yogurt because of your intolerance to lactose, you can still hit the toppings bar and fill your cup with some delicious treats and a variety of chocolate.
Now the sugar rush is not the only thing that's appealing to the average stoner: The pretty vivid colors in the store and the smooth colorful plastic spoons that we get to keep as a weird souvenir of our foggy trip to the ice-cream parlor all enhance this childish but rejuvenating experience.
You say Menchie's, I say: "Let's roll one so I can try to fill my cup with as many toppings as I possibly can and still manage to finish it all".
In other words: Menchie's is where we all hope we end up after we die. After meeting at the crossroads, maybe we should hit up the "Menchie's" by the heaven's gate....Duuuude!