Try sacrificing a few goats to Satan behind the party near the Goat Protest. You’ll have plenty if you’ve got the power to summon infinite goats.
If you haven’t got that power, humans will have to do. Attack a few party-goers to knock them down, then lick them and drag them up the mountain onto a large glowing satanic symbol. You can’t miss it.
You’ll need five sacrifices in total before you unlock demonic powers. You’ll be able to summon a black hole with Satan’s power, and with that black hole, you should be able to gather all the goats together into one goat singularity, and then carry that singularity elsewhere on the map.
I recommend hiding your goat bodies under the water slide.