I was like 19 she was 18

One day as she was giving me a blowjob she says it felt bigger in her mouth than usual, suggesting my dick might have grown.

I asked her how big do you think it looks?

She guessed “3 or 4 inches?”

Me Deeply offended, i correct her that its 5 inches

She smiled and made a skeptical face

I asked if she wanted to measure it and she said “if you want me to”

She pulls out a measuring tape and she confirms its 4.9inches

She teased me for being off by .1 inch

I asked “where you hoping it really was 5?”

She shyly said no with a smile on her face, giggling.

I asked her Am I the first you measured?

She said no, she measured the last boyfriend she had too.

How big? I asked

she pointed at the measuring tape

6 inches

I laughed, only an inch bigger and you guessed I might be half his size?

She says she only guessed that low because his was also thicker, so it through off her visual reference

I expected to be devastated by the answer, but since she was putting her hands around my cock to show me just how much thicker, I was getting more and more turned on.

She asked me if it bothered me finding this out and I told her no. We fucked soon after and i prematurly came so hard.

Thinking back on this he was probably 6x5.5 compared to my 4.9x4.7