The farmer finds his son behind the barn pulling his pud, and the old man
exclaims, "Son, if you are old enough to do that, then you are old enough
to get married."  The next day the farmer takes his son across the hollow
and arranges a wedding between his boy and the neighbor's daughter.  The
two are soon married and move in with the groom's father.  The next
morning, the farmer father comes behind the barn and discovers his son
flailing away, just as before.  "Son, I got you married so you wouldn't
have to do that!" "Ah, pa, she ain't got no grip at all!!!"