From this episode you could really tell how caught up Monica was on Richard when she tried to send him a message but when getting into his answering phone she realizes it isn't breezy and tries to delete it.
My personal guess is that the writers couldn't think of a reason why phoebe would be late so they made the bickering boys, chandler and joey, spill humus on her dress.So she uses a large Christmas bow thing which is expected of her character.
Also like her character was Rachel not being able to decide what to wear and after Ross shouts at her she puts on her 'sweats' and decides not to go.
After chandler goes to the toilet, joey steals his chair, causing them to steal parts of the chair, hide each others underwear and wear all their clothes!
It was a bottle-episode, with only one room, no guest stars and sort of like an episode of 24, with time running out.