Now you're pushing 31, duty calls you come and run
Instead of
Now you're pushing 31, duty call you come and run

When will this be over, when will you be done
Instead of
When will this be over, when will you be gone

Be a man, try to be tough
Or
I'll be your man, try to be tough
Instead of
I'll be your man child to be tough

Give me twenty minutes in between
Instead of
Giving twenty minutes in between

(not sure about this one at all)
You can kill yourself, or you can make your mama proud
Instead of
You can be yourself, well you can make your mama proud