S'pose this is down to me
Right Packer I'll try and explain this as easily as I can
When you and your boyfriend are getting intimate and you stick your Pee pee in his bottom sometimes he may not have been to toilet and the word "Fudge " is used instead of Poo.
Pushing the afformention "Fudge" with your Pee Pee can be an allegory of Packing
Put together it's "Fudge Packer"
Not very pleasant for us non
english sorry non homosexuals, but I've tried to put across as plainly and simple as possible for you to understand
Hope this explains this embarrassing episode in your life