My nearly 4 ds1 stood on a bee, though we didn't work this out till a couple of hours later. Twenty minutes later he fell asleep sitting in an uncomfy chair, while eating an apple. Was picked up and moved into his brother's buggy so he wouldn't topple over. Stayed asleep for about 80 minutes.
All highly unusual for him. Woke up and couldn't/wouldn't weight bear on his slightly red and slightly swollen foot for a few hours.
Would appreciate any stories of how your kid's did with their 1st and 2nd stings.