massachusetts? PLEASEE HELP!!!!!? ok so my question is basically what it said. i neeeed to know what the fruit is called! its very important please help! and leave pictures!

It sounds like a horse apple. they are huge, larger than a grapefruit and green.

Possibly the Osage Orange (aka Hedgeapple). It can be bigger than a baseball and kind of looks like a brain. It's not native there but has been commonly planted throughout the US.

Quince

http://en.wikipedia.org/wiki/Image:Quince-israel.jpg

The Quince (Cydonia oblonga) is the sole member of the genus Cydonia and native to warm-temperate southwest Asia in the Caucasus region. It is a small deciduous tree, growing 5-8 m tall and 4-6 m wide, related to apples and pears, and like them has a pome fruit, which is bright golden yellow when mature, pear-shaped, 7-12 cm long and 6-9 cm broad.

The immature fruit is green, with dense grey-white pubescence which mostly (but not all) rubs off before maturity in late autumn when the fruit changes colour to yellow with hard flesh that is strongly perfumed. The leaves are alternately arranged, simple, 6-11 cm long, with an entire margin and densely pubescent with fine white hairs. The flowers, produced in spring after the leaves, are white or pink, 5 cm across, with five petals.

Barney Frank