The type of biscuit that is purely made of the grains of our great Australians beaches. Usually turns into original form when pressure is applied. Mainly given at budget boarding schools. Digestion is not advised.
The act of turning someone or yourself into a sissy, often via sissy hypno, a chastity cage, and wearing feminine clothing.
Being a sissy isn't the same as being a trans woman, as sissification is done as a fetish, and isn't the same as transitioning, though trans sissies do exist.
Sissification is mostly done in femdom relationships and is often combined with other things like cuckolding
Person: How's the sissification going?
Sissy: Great! I feel just like a woman already.