We've shown you a few Friends continuity errors before. You know, when a mug-was-placed-there-but-omg-now-it's-there. That sorta stuff.
And while we do get an undeniable thrill from spotting these little mistakes, they are nothing compared to the whopping, stonking, stinking character errors the writers have made throughout the series.
Watch! The Essential Friends Dictionary
Okay, okay, these might actually be *tiny* little errors (WHY CAN'T PHOEBE REMEMBER SHE HAS TRIED SALTWATER TAFFY BEFORE?), and we might be being really, really pedantic (WHY DOES SEASON 9 CONTRADICT SEASON 2?), but still. BUT STILL.