to all 232 people who read my friend's fubar - my brother pooped!
And the answer was:
::: drum roll please :::
CASTOR OIL!
I found a bottle in my medicine cabinet.
Gave him 4 tablespoons.
2 hours later - it was TIME! He left the dart game in our barn and said "Success!" and went up to the house.
Nobody thought of that - although everybody had FANTASTIC ADVICE (I think!!) - but it's what we had at hand, and it worked.
The answer is had.