They were just shitfaced. (Speaking in tongues follow-up)

When they heard this sound, a crowd came together in bewilderment, because each one heard their own language being spoken. Acts 2:6 We hear them declaring the wonders of God in our own tongues!" Amazed and perplexed, they asked one another, "What does this mean?" Acts 2: 11-12 Some, however, made fun of them and said, "They have had too much wine." Acts 2:13 Then Peter stood up with the Eleven, raised his voice and addressed the crowd: "Fellow Jews and all of you who live in Jerusalem, let me explain this to you; listen carefully to what I say. These people are not drunk, as you suppose. It's only nine in the morning! Acts 2: 14-15

Let's face it. These people weren't speaking multiple languages at once. They weren't communicating a la the United Nations with headsets and translators. They were bronze-aged desert dwellers; life was brutal. Of course they drank in the morning. Peter, don't be a buzz kill; embrace it and grab a mimosa.