In the last century , [70's] I was riding with just a T shirt, And it had a pocket on the left side...Well a bee got in the pocket and stung me... At first i thought i got shot, I was lucky to keep the bike upright, So i pulled into a parking lot..And i guess because the sting was close to my hart it took almost a half hour before i could stand up and get back on the bike... Two stings probably would have cause me to drop the bike, Or call for medical help...