Season 7, Episode 6: The One With The Nap Partners. Rachel and Phoebe make a PK decision on who gives Monicia a bridesmaid; Ross and Joey take a nap together.
trade off [ˈtreɪd ɒf]
Trade-offs; sell; alternate use; interchange substitution bits
Monica called rachel and Phoebe out to dinner to discuss who would be her bridesmaid.
excedrin [ɪkˈsedrɪn] PM
A painkiller (has a drowsy effect)
Joey and Ross had accidentally hugged each other for a (best ever) nap before, and Joey wanted to do it again.
embark [ɪmˈbɑːrk]
v. Get on board, get on the plane; get started, start (new or tough things)
Ross and Joe prepare for the "Bridesmaid Exam" to see rachel and phoebe who took the exam better.
garter [ˈɡɑːrtər]
n. Garter belts, embroidered hoops, garter belts
Phoebe eventually wins the game, and Rachel brings everything he's prepared for Mon's wedding to Phebs.