Quote from Niles in The Fight Before Christmas
Niles: Unfortunately, I have to see Maris tonight. Martin: Maris? What the hell do you have to see her for? Niles: Sadly, to pay my condolences. It seems our old gardener has passed away unexpectedly. Frasier: Oh, not Yoshi. Gosh, that's too bad. Niles: He had a heart attack when he was out trimming Maris's elaborate hedge maze. The paramedics never had a chance.