A euphamism for tea - usually used in impolite/private places where mentioning tea itself would be seen as stuffy and/or nerdlike.
Often employed as a coverup for a sentence already begun.
I really fancy some tea... nage girls right now.
No thanks Larry, I don't want any crack cocaine I'd much rather have some hot, black, steamy, tea... nage girls.
None of your 'coffee' for me thanks, I'm English - we prefer to devour, sweet, sweet teenage girls over here.