Utterly Mad

So me and a male friend have come to the conclusion that it's somewhat awkward for guys to talk about dicks for some reason, after having a conversation about dicks.

Which is pretty weird when you think about it because you both have one, so it shouldn't be difficult to talk about?
I mean it generally seems to be considered weird between guys to really talk about vagīnas yet I've had female friends quite openly discuss both with other women and with me with absolutely no issues.