The Bible doesn't specifically state that Noah was laughed at or mocked while building the ark, though it is a common belief and often portrayed in stories and films. The idea comes from the context in which Noah was building the ark. According to the Book of Genesis, Noah built the ark on God's command to save his family and a remnant of all living creatures from a coming flood.
In **Genesis 6:5-22**, the Bible describes how the world was filled with wickedness, and Noah was the only righteous man in his generation. Because of this wickedness, God decided to flood the earth and instructed Noah to build the ark.
While the Bible does not explicitly mention that people mocked or laughed at Noah, it's inferred by many that the people of Noah's time, who were unaware of the coming flood and continued with their lives as normal, may have scoffed at Noah for building a large ship on dry land.
The concept of people mocking Noah comes more from interpretations and extra-biblical traditions than from the direct text of the Bible.