Yes i did some times. When i was 6-7 i usually said, 7-8.
Nowadays i have no any problem with my age, but sometimes lie about this question. And the reason is to safe my identity. For example, i would like to keep my identity on this site, so when i made my account i wrote a much higher number. Even if i chat or mail to anybody who knows me.... No one would think, a women in my age say a bigger number
.
But, as i see, this site it was unnecessary.