Omega comes and asks you to choose between one person being tortured, and 3^^^3 people receiving one dust speck in their eyes each. You choose dust specks. 1/10^100 of those 3^^^3 people were given the same choice, and 1/10^(10^10) of those were effectively clones of you, so each person gets 3^^^3/(10^(100+10^10)) dust specks, and falls into a black hole.
(To borrow some D&D parlance, you should expect anything that affects the universe in 3^^^3 ways to also cause a wild surge.)
This is our monthly thread for collecting arbitrarily contrived scenarios in which somebody gets tortured for 3^^^^^3 years, or an infinite number of people experience an infinite amount of sorrow, or a baby gets eaten by a shark, etc. and which might be handy to link to in one of our discussions. As everyone knows, this is the most rational and non-obnoxious way to think about incentives and disincentives.