guys...i have the great opportunty to fuck 2 hot cheecks with my hard cock.i am a bit anxious.because there are really hot and there are really experienced.i dont worry about my size though because i am well above average for my country and i dont give a shit and my duration is great.i am worried about the performance anxiety thing.i am 20 years old.very,healthy with high testosterones levels and great mood for sex.but i would just like to have in my pocket some viagra to drink in case of emergency,to feel secure.so hipothetically speaking,lets say that i cant have an erection.what will viagra do to me and how does it feel?will it work?if i can have a semi erection but not full due to lack of concentration what viagra wil do?how does it suppose to feel?how much time before it starts to work?