1 definition by Fluttershy the mare wolf

The most sacred promise anyone can give. When broken, you lose your friend forever. The pinkie promise is done by uttering a chant and doing the motions
AJ: you bettar not tell Twi that ah lost her book. Y'all know what happened last time thayt happened.

RD: Pinkie promise. Cross my heart, hope to fly, stick a cupcake in my eye.

RD crosses a hoof over her heart, opened her wings and gave a flap, and put a hoof to her eye.

AJ: thanks, Dash. Ah really don't know what ah'd do without y'all.

RD: no problem, pal.

*later*

RD listened to Twi talk about her new book she lent to AJ. She bit her lip, and opened her mouth to confess. Suddenly, Pinkie sprung out of a potted plant

Pinkie: you'll lose them. Foreeeeeevveeeerrrrr
She slowly disappeared into the plant.

RD: don't question it...
by Fluttershy the mare wolf December 8, 2013
Get the Pinkie promise mug.