User talk:Fullspeed

Looking for origin(s) of idiomatic expression: It is(isn't) one's cup of tea ( usually used in negative ). My sister and I were wondering where this came from. For something like " It is piece of cake ", we would guess that the meaning originated from how easy to slice a cake, or how easy to eat a piece of cake. But for cup of tea, we were not sure where it came from.. HELP!!