1. Making the letter "B" sign: This is done by touching your thumb to the tip of your index finger, with the other fingers extended.
2. Moving your hand in a downward arc: Start with your "B" handshape at your forehead and move it down towards your chin, as if you're mimicking a banana curving.
It's important to note that sign language can vary between different countries and regions. This is just the ASL sign for "banana."