text: lady's i was wondering, what is considered having a "big d".? keep your answer in touch with reality. i'm looking for the smallest measurement that you would consider big and "useable". please add what age range you fall under, for research purposes. *extra question* is lenth just as good as width? width is more important. 7 inches is the smallest length. but it is equal for me if it is 4 inches long  and wide or 10 inches long and thin - they both re useless. it should be "big" - long and wide both. maybe 3 inches in diameter and 7 inches long the smallest big size for me