A party --- all male, all female, or co-ed --- where everyone draws straws to determine each person's role. A person is selected by straws to be entered vaginally (female) or anally (male or female) by a train of dudes who each leave a deposit of their man-seed in them. One "lucky" person, determined by straw drawing, takes his or her straw and inserts it, after all deposits are made, and sucks out the gooey mess left inside.
John: Hey, Linda, we missed you at the Felching Party last night. It was a blast!
Linda: I know! I heard Rod Stewart was there and had indigestion from drinking all the baby-batter that was blown into Nicky.