British slang, a synonym for taint or gooch, describing the skin between the scrotum and the anus. Tizzent is a shortening of the two words: it isn't.
Cheerio, old chap. Why don't you bend over and let me tickle your tizzent?
What's a tizzent?
Well, tizzent your balls and tizzent your arsehole.
What's a tizzent?
Well, tizzent your balls and tizzent your arsehole.
by Corey Lynch is The Gump 69 March 10, 2008