After Michelangelo's David, this is probably the most famous beefcake sculpture in the world. Interesting that one must enjoy male bodies only when they are in agonizing pain.
Similar to the boxers and wrestlers that we are "permitted" to ogle today.
The story of Laocoön has inspired many artists to try their hand at depicting bulging, straining muscles, regardless of the reason that giant snake tentacles are biting and straining at them.
Alessandro Allori (1535-1607), a painter of the Italian Renaissance, copies the pose of the ancient sculpture, but fills in the blanks a bit.
The older son, on the left, is Antiphas, and the younger, to the right, is Thymbraeus. The stories make them twins, but artists usually think that it's more poignant to make one ateenager and the otehr a child.
See also: Japanese Tentacle Porn