Join Date Feb 2011 Posts 170 an average cock is 5 in length, but i think the most important thing to have is girth, most women call 7x5.5 relatively big, if any woman can fit a 5.5 girth dick in her pussy so easily, you have to question what your dick is going into, some girls can not fit anything longer than 4 inches into their vaginas, every girl is different.