blue lines on a stick
This refers to a pregnancy-test device a "stick" that a woman uses to see if she is pregnant. The device displays one blue line to indicate the test has worked. A second blue line, forming a + indicates pregnancy.  So, yup, a Pregnant Pause...
A traditional Ashkenazi Jewish dish prepared from calves' feet, similar to an aspic. In Eastern Europe, Jews served p'tcha with chopped eggs on Sabbath. In the early 20th century, Jewish immigrants in the United States continued to prepare the dish, and it was often served as an appetizer at Jewish weddings.