Hahaha, my brain just exploded with all the jokes colliding in my head.
To answer your question seriously though, no there isn't. The only way to do it would be to put in a heavier counterweight which would likely burn out the motor.
What you can do though is change the patterns, in your sounds menu choose a custom profile...then set vibrate mode to custom and set it to 5 short pulses. You'll likely find that the on and off will get your attention better than the single long pulses.
