Roleplay phone sex isn’t for the faint of heart. After all you are playing with me. The Queen bee of mischief and mayhem. To begin with you need to pick the style of the role-playing game. Gruesome. Ghastly. Peaceful. Oh, scratch that one. We aren’t having a fucking peaceful playtime. No sir, not me. It must be remembered that pain is pleasure. The pain is gain. No going in the sleep with a pillow.
First, we pick the play game and if you want it to be Ghastly you go with a hanging. Have the Velcro ready. After all the nastier it is the harder you will get. We want you squirting all over the corpse at midnight. At the same time, you may want to save it and cum inside of me. No left-over evidence. 
Now we know one thing for sure. It is going to be Killer phone sex. Someone is not going to live through the night. Strangulation is much harder than what most know. You need to be applying constant pressure. After all, allowing the body even the tiniest amount of breath will keep them alive longer than you think. Up to and including them passing out and you not finding a pulse.
No victory sex on the corpse until we are sure they are dead and gone. Fuck me with your throbbing cock. The corpse just to the left of you. Now it is to the left because they your heart is closest to what you love the most. Hence the boner throbs more and you obviously shoot the load quickly.