when we first started dating she made a reddit post asking for tips on dating a guy with a thin dick. fucked me up for a while because i found it on my own and kept it to myself for a couple months. eventually brought it up and it boiled down to some shit like "you were probably nervous and not fully hard". didn't wanna have sex for a long time after that

just a few days ago she made a comment about how my dick was like our dog, who is long and skinny (the dog, not his dick). i didn't comment on that because i don't feel like ruining my confidence and going through this shit again

in your case, it sounds like she was just fucking with you. wait until she asks the internet for tips, then you can feel embarrassed