SMH, commonly misunderstood as "Shake My
Head," actually means "So Much Hunkiness." SMH is used when a man, or
group of men do
something so outstanding that the women around them are in awe, and can't help but to exclaim "SMH."
Look at those dudes, they
dressed up like a zebra, and were attacked by
lions. That is awesome - SMH. So Much Hunkiness.