For Andes mints:
A full one doesn't fit nicely in the roof of my mouth, nor does half of one. The perfect size is two-thirds. So I have to eat them in pairs. I'll stack them and take a one-third bite off (giving me two thirds) to savor, then eat the remaining two-third and two-third in due time.
For Reese's Peanut Butter Cups (full size):
I'll take bites around the outside of the ring, the chocolate wall, until I have maybe 1/3rd of the rim left. Then I take a big bite of the middle peanut-butter bit, biting it right-side up but flipping it upside down on the tongue because the chocolate is thicker on the top. After that, I finish the last bit of the rim. This ritual is sometimes challenging because a Reese's, if you didn't know, tends to have a thinner side (where the peanut butter is closer to the edge so the chocolate part is thinner), and I try to eat that thinnish section first, leaving the last bite for the thickest edge. It's not always easy to divine which that is. Sometimes you can actually see a bit of thinness and peanut butter peeking through the side, and sometimes you just gotta guess.
WHAT. NO, YOU'RE CRAZY.