Your mistress installed a very dangerous device connected to your heart: the more you get horny and jerk off, the more your heart beats faster. Your only change to save your life is not to get hard, and if you get hard, not stroking. But she's in front of you, teasing you with her body. She's tired of you, and she found this innovative method to take you out. Will you resist stroking your cock or not? will you save your life, or, just like the weak man you are, you will stroke your cock until your heart explodes?