Not very

His eyes were glued to it. The crotch was not only hairless but also much smaller then his, it was clearly soft and stood at a single 1 inch long. He knew he was in no place to judge others for having small dicks but this guy was Micropenis levels of small. his balls were so small they could almost look like one normal sized ball. As he stood up he Saw marks cock throbbing...

"holy shit..." Chris muttered under his breath as he realised the 1 incher he was viewing was mark fully erect, his foreskin hanging off the tip and his cock so small it didn't hang so it was hard to tell.