It's called a LAST request for a reason. Plus if they won, it means they killed a someone so that allows you to kill him/her
To clarify this, @Rawrr asked for LRs. Metal said "i want to spin the wheel," so after spinning the wheel and it stopping, Rawr kills him. Probably should have said "I want to do whatever the wheel spins on." It would have made it clearer. People sometimes do lrs like "I want to go to big cage" and just want to die afterwards. This could have been interpreted as that LR. You gave the example of the swimming lr. It's literally the same LR as you asking to spin the wheel. After they swim, they die because it was their LR. You asking to spin the wheel, then spinning the wheel can be used in the same situation as the swimming one. After you finish spinning you die because you done your LR and will cause a delay.