spoiler
Anal and prostate play is like the most tame normal thing ever, foot stuff and rope are kinkier and those are pretty tame.
Presumably you would have no judgements against anyone doing either. Maybe some internalized stuff going on? Or yeah, just bottom dysphoria.

If this is actually getting to you, maybe look up obsessive compulsive disorder (cannabilistic images would be closer to obsessions than compulsions, compulsions are more like rituals). If it sounds familiar, maybe consider talking to a psych or something.