Thanks again for all your kind replies
To answer a couple of your questions:
for blondeslave; most of the fabric is "Playful Pups" by Paws for Thought for Benartex, plus a bit from my stash.
for mmonroe; I have a Brother Super Galaxie 3000, around 10 years old or so.
for yellowroses; I digitised the boxers myself and embroidered them on the Brother.