In football lingo, a curl is a spin on a football, which makes it swerve when it's kicked.
Honey bees can also "curl."
I took this photo today of a lone bee curled on purple sage. The worker bee was gathering nectar in the summerlike weather.
"That's the same position a bee has to get in to sting you," observed UC Davis apiculturist Eric Mussen. "She can't lie flat to sting. She curls up and stings."
Like a comma.
A death "sentence" for her; a little pain for the victim.