Next, Pinkie went back to her cart and located an
enormous battery and controller, which she dragged over to where she was
working. She tied copper wires between the terminals and the nails driven into
Dash’s hooves, then gave Dash a wink and flipped the switch.Electricity rocketed
through Dash’s body.
Okay yeah, I really don’t see any connection between this and the cupcake ingredients. At this point, Pinkie just seems to be messing around.
The blue pony reacted immediately; her body seized, and her muscles
snapped taut. Dash’s hips thrust skyward, her eyes rolled back, and she let out
a deep, throat shredding cry. Pinkie giggled and danced in place, then reached
down and turned up the juice. Dash convulsed uncontrollably, and her bladder
emptied once more.
She still had something left in there?
Also, I guess maybe this could be to prepare Dash’s muscles somehow?