Yes, in many times during the writing of The Communist Manifesto Karl Marx and Frederick Engels discussed that The Pleasure of Being Cummed Inside is a luxury of the bourgeoisie and the status of PoBCI amongst the bourgeoisie must be alterted as to make the bourgeoisie demend that the practice be considered a disgusting and immoral activity, as it was used to exploit the proletariat and make the proletariat people feel guilty and unwanted.