Slovakian Switch-a-roo

A wild act of fornication, whereby person A shits into a funnel that has been inserted into person B's anus. The pressure build-up then causes the faeces to enter person B's anus, thereby completing the shit switch-a-roo.

Vladimir is very freaky, I heard he gave Helga a Slovakian Switch-a-roo in the men's toilet last night. He must carry a funnel around with him the sick bastard.