Lucy needs money to buy Jerry a bicycle for his birthday and when snapping at Mr. Barnsdahl (she's surprisingly aggressive for a second there) doesn't work she resorts to the famous Lucy crying jag. He's not having it and suggests she get a part-time job.
This is the first time we see Lucy playing secretary and the office scene is funnier than most of the ones she will do with Gale Gordon. In fact, Mr. Mooney would have had her head for behaving the way she does here. There's trouble with the intercom, pencil sharpener and typewriter; but the water cooler bit is the corker. If you ask me, John McGiver's character is way too lenient with her.
Lucy is given a second chance and is asked to deliver some documents to a restaurant for a lunch meeting. An earlier scene at home cleverly had Viv mention a loose thread on Lucy's dress, and the payoff is huge when it gets caught in the elevator doors, causing Lucy to literally become unraveled before our eyes. She's hysterical when doing the "jump rope" bit. Seeing her in nothing but a slip must have been kind of risqué for a sitcom at the time.
The third big comedic scene has Lucy in a kangaroo costume, eating onion soup in front of bewildered and bemused restaurant patrons, but the office and elevator scenes were much funnier.
It ends on a more sentimental note than usual, as Jerry gleefully rides his new bike around the house, making all of Lucy's trouble worthwhile. This is one of the best of the early episodes. Lucy basically carries the whole episode all by herself.