It’s a bit of a love-hate relationship; they think that it’s a bit childish, but my dad built with system until he was in his mid-teens, so he tolerates it. My mom thinks that my MOCing is cool but encourages me to write on topics that will “appeal to a wider audience”. Back when G1 was in its prime, circa 2005, my dad actually wrote a public blog entry on how “legos” had changed so much since his childhood; “they now come in plastic tubes and have tons of media tie-ins that I’m sure are very lucrative”.
LOL.
Personally, this would serve only to further repulse my mom if I quoted it to her.