You were the wife of James Phelps. James, you and his twin brother Oliver Phelps were in a gym with other peoples, and you were wearing a flying Squirrel onesie.

While James and Oliver was on a trampoline you then run and yell.

"IMMA SQUIRREL!"

And you jump in a sort of pool with foam cubes and James and Oliver burst out laughing and peoples around too, even kids were laughing.