You call someone zacsy when that person has a horrendous, giant, amazing, beautiful, big d*ck. You can use zacsy too, if someone is very sexy and hot.
When you line up two buttholes and one person poops into the other and then the other poops back into them.
Those two dudes played “hot pootato” last night and passed the peanut with the corn on the side of you know what I mean.