If you saw the Netflix movie "Chickenhare and the Hamster of Darkness" then you know exactly what she is doing. For those who don't, Meg the skunk did this same exact pose just before she sprayed an entire bar with her skunk spray to help Chickenhare and Abe out of a jam they accidentally caused when they went to said bar to look for a capable guide.

Casey here is just imitating the same pose before she too unleashes her own spray.

Casey and art ©