Season 5: Episode 106: The One With Ross's Sandwich
At the museum, someone eats Ross's leftover turkey sandwich, compounding his depression over the state of his life. Phoebe convinces Ross to leave a threatening note with another turkey sandwich, and Ross's coworkers react by insisting he attend therapy. The therapist puts Ross on tranquilizers and places him on sabbatical from work. Meanwhile, Phoebe volunteers to collect change for the poor and gets stationed in front of Macy's. Her enthusiasm is soon squashed, however, when people try to take the money from her bucket, or spill their drinks on it, and even urinate on it. She plasters signs all over the area, and enforces strict rules about what can and cannot be placed in the bucket. Eventually she is pulled from her post, and relegated to a less high profile location.