"The Stall" Season 5, Episdoe 12

In the movie theater bathroom Elaine finds herself without any toilet paper. The woman next to her cannot spare a square. George is in awe of Elaine's super cool boyfriend and agrees to go rock climbing with him and Kramer. Unfortunately George and Kramer fail to tie a knot and Tony takes a tumble. Kramer recognizes Jerry's girlfriend's voice from his sexual phone calls.