I remember quite recently what we've been taught at middle school: Fruits are the product of a flower, period. Vegetables are plants cultivated for consumption.

I remember quite recently what we've been taught at middle school: Fruits are the product of a flower, period. Vegetables are plants cultivated for consumption. So yes, tomatoes are fruits but because they are cultivated they are also vegetables. Some distinctions need to be applied as well (are apples only fruits or vegetables as well?)