Senpai getting a piece of the thigh meat, but didn't even get a chance to enjoy it.
Piggy back is easy, but you have to hook your hands properly or your fingers will get tired quick (like what happened to senpai).
Shoulder ride is technically easier, but you need to be able to stand up once they get on the shoulders which isn't easy if you have bad knees.
Princess Carry is a killer. Your arms get tired quick. Hopefully the person you are carrying at least helps you out by wrapping their hands around your neck, but some people don't/can't.
Cave man drag (arms or feet not hair) is also a bitch, but mostly because it's impossible to get a proper stride going unless you have a sled.
All experience from transporting drunk friends.