Hey I have lots of cans of shaving foam and I was wondering what else I can make instead of just pies as can I make gunge to make it drip all over me and also I am happy to try and do a meet up around Norwich as I am bi so I am easy and open

Get some soap dyes from Amazon, those, and a little bit of water makes great and very photogenic gunge!

You could fill your underwear with a few cans.
Make sure the pants are tight so no foam escapes.
If you have a lot of cans you could empty them into a small inflatable pool or bathtub.
Shaving foam beds are also fun.
Whatever you decide, have lots of foamy fun