One is not allowed to eat milk and meat at the same meal. One waits longer between eating meat before milk except for certain foods like hard cheeses. Hard cheeses come under a special category of food in many communities where they wait the same amount of time as before eating meat. Blintzes are another commonly eaten food on Shavuos. The blintzes are shaped like the Two Tablets were.
Most people think of the Tablets as being round.
However, they were rectangular with a straight top and bottom. The Tablets were very special according to many Rabbinical opinions. One thing that was unique about them was that one could read the statements from any direction that they were reading from. The second set of Tablets were brought down from the mountain on the Day of Yom Kippur. Another thing that made the Tablets very special was their weight.