Ask your sister to pick 2 numbers, first between 1 and 10 and the second between 10 and 20. The first number will be the amount of edges you will need to reach, the second is the amount of ice cubes you will have to insert before you start, if it is high and you cannot fit anymore simply insert the rest during edges. You can cum after you finish the edges...
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22/m straight
 - Edge, pain (try me...), cbt, orgasm control
 public, ...
Limits - scat, pee, permanent, cross dressing, gay, anal, messy
PM me any dare... I might send pic proof 
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