Lucy says she is a Taurus, born April 20 - May 20, but in Lucy's Mother-in-Law (1954) she says she was born on August 6.
Lucy pronounces "Gemini" incorrectly.
Ricky says he'll bang his foot on the floor when it's time for Fred to come up to play his fake part. Inexplicably, though, Fred doesn't arrive for numerous minutes after Ricky's foot stomping, during which time Lucy and Ethel complete their fake conversation with Tillie. Fred was unaware of their plans, so his delay couldn't have been for that reason.