fruit(s) and vegetables

This came up over lunch here at work. Is it proper to say “I am going to the market to buys some fruit and vegetables.” Or 'I am going to the market to buy some fruits and vegetables." “Fruits” sounds wrong to me, but that of course doesn’t mean it is.

“I will buy fruit and vegetables.” “Fruit” used like this is already a plural noun, like “sheep”, so you don’t need to add an “s”.

Is there money riding on this? :smiley:

Well, then how come some people use the expression:

“Enjoying the fruits of my labor?”
Hmmmmmmmmmm???

Fruits there meaning “the benefits” of my labors.

Well, yeah, unless it was an apple-picker!
rim shot