Several jokes are made about the size of his genitals.
The big man made a fist down at his side, about the size of a bucket.
A device made from metal, about the same size as a cigar.
"The Governor was making a statement about the size and kind of government he wants to have," she said.
That makes them about twice the size of the largest European ships in the sixteenth century.
Try to make them all about the same size.
Enough to make a couple of thick pads about the size of my hand?
The bullet makes only a small hole on entering - about the size of your little finger.
Assumptions would need to be made about the distances involved and the size of the people in the photograph, but reasonable estimates are possible.
Altogether, that would make it about the size of a horse, perhaps a little smaller.