Season 6, Episode 16 - "There Goes the Bride, Part 1"
Dorothy has been sneaking around with Stan for months, but only Blanche and Rose know. She rides Blanche's bike to meet him; otherwise, Sophia will hear Stan's car in the driveway. What does Rose insist that Dorothy take with her before she leaves?
A bike helmet
Rose: I thought you were going out with Stan tonight?
Dorothy: I am, I am. See you later. Oh, Blanche...favor?
Blanche: Oh, Dorothy, come on! This has been going on for months now. "I have a date with Stan. Can I borrow your bike?"
Dorothy: He can't pick me up or my mother will hear the car. What, you think I'm proud of this?
Blanche: Go on, honey, take the bike.
Dorothy: Thank you.
Rose: Dorothy?
Dorothy: I'm just going around the block.
Rose: Dorothy!
Dorothy: Oh, God. Oh, God, I hate what this does to my hair!
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