It's bollocks though, whoever swears by it. If you read Spare and then think about this stuff, it's such a dumbing down. There's an essay called The McDonaldisation of Occult use - title should be self-explanatory, but that's what sigils as magic spunking is.the magical spunking bit is the point at which i get off the bus but literally everyone goes on about it and it's what TG swore by and also grant morrison