One partner plays the "waiter". He takes a small glass bottle of sparkling Perrier (the narrow sloping-necked style is required). The "waiter" unscrews the cap and places his flat hand over the top. He agitates the bottle and quickly inserts the neck of the bottle into the anal orifice of the "customer".
Clearly, fast action and effective pre-lubrication are required to obtain the maximum effect.
Chris: No way..I just perriered her a little while. I think she'd like it.
ex2) Jesse: Hey, Ben!! I think I saw Dan and Kevin perriering a minute ago right in front of your house!!
Ben: Really?? Oh..my God.. then it was true that Kevin sucked Mr.Garrison's penis when we were in school.
Jesse: I knew it!!I'll tell his mom on him right away.