When a guy in Vietnam feels the need for an increase in, shall we say, manliness, potency, and virility, he reaches not for a little blue pill but rather for a concoction of snakes fermented in alcohol, such as the blend shown in a glass jar in the image.

If you want to try this at home, note that King Cobras are best. Thanks to my friend and traveling companion Eric Ryan for his wit, and for this caption. To the best of my knowledge these are farmed snakes (the Vietnamese army runs a snake farm in the Mekong River delta, where we photographed this jar of snakes), rather than wild or endangered species.