Wanking while sticking a couple of fingers up your own arse. Sort of like a manual simulation of taking the central role in a no-handed conga, or being the meat in a man sandwich.
Euggh what's that under your fingernails? Oh sorry I got carried away and had a ball pot wank last night.
Pot noodle wank, a pot noodle wank is when your bird goes out for a steak dinner, and leaves you home alone to fend for yourself, thus leaving oneself lonely and hungry with the only option of a Pot Noodle Wank.
Liam: what you doing for tea tonight Tweed?
Tweed: Well, Laura’s gone out for dinner with friends, looks like it’s Pot Noodle Wank and maybes a cry for me tonight.