Payback's a Bitch

For Eamon's Limerick Competition (part 1 only)
 
There was an adulterous cheat
who would fuck girls he met in the street.
His wife became tired
and so she conspired,
while sleeping, to cut off his meat.  
 
Apparently there's some kind of 3-for-1 deal going on today... Hopefully this is a more complete story for our adulterous cheat:
 
Payback's a Bitch Part 2
The adulterous cheat was in pain,
his wife having axed his "main vein".
He put it on ice,
with hopes of a splice;
to have it sewn back on again.
 
Payback's a Bitch Part 3
The adulterous cheat was reformed,
in monogamy he gladly conformed,
but lest he forget,
his wife did beget
his dick to be slightly deformed.