I can tolerate the word in dirty talk during sex, but it is not a turn on for me (I am 100% bottom). In my experience top guys that used the word manpussy/asspussy want to verbally express their masculinity, feeling quite insecure when they fuck a guy.
My husband like to verbally express his masculinity (maybe dominance over me in the bedroom). But he is not insecure in the bedroom.
If it is a turn on to you, then great. For me, it doesn't float my boat, maybe because I don't feel that bottoming means assuming necessarly a feminine role.