Nice to hear about you and your mom having a close and open relationship and be able to talk about this kind of stuff, many of my posts talk about my relationship with mom. You talk about your dad in the past tense, so I'm sorry to hear if he's not around anymore, I know about that as well.
On topic, Im bigger than my dad, as he was 11" according to what my mom has said. But I wonder why you view yourself as "small"? Yeah, you're not on the bigger scale of guys here, but in general, you're sporting a nice size, and with your mom talking about having discomfort with your dad's size, I assumed it would make you kinda glad you're not as big as him, so you wouldn't cause the girls you're with the same discomfort? But, I suppose like most guys, being bigger is just something you wish you were. | 
