No
Yes
they wear thongs under their wrestling gear no matter who they wrestle
with a short sleeve in rain or snow
Shirts.
yes
wear a jock with a hard cup, or wear tight speedo under the singlet.
Yes, check out University of Maryland's singlets, can't find them for sale yet.
Nikes and Under Armor
Under most circumstances, horses and elephants do not wear armor, but when they do wear armor, they do so for exactly the same reason that people wear armor. Since horses and elephants have both been used to carry soldiers in times of war, or to attack an enemy, they too require protection against the spears, arrows, or other weapons that might be used against them.
god no. only a pog would wear accruements under BODY ARMOR.
Samauri Armor.
Personal preference, most wear pads under their jersey and pants.