To dream of a banana split sundae often represents large amounts of sexual indulgence that is enjoyed being discussed afterwards. Having a lot of sex and talking about it afterwards with your friends.
Negatively, banana splits may reflect peer pressure to have sex and openly discuss it.
Example: A young girl witnessed other people buying , but decided not to buy one herself. In waking life her friends were having sex, but she decided that she didn’t like the boy she was dating enough to have sex with him. The banana split sundae may have reflected the large amount of sexual activity that was being enjoyed being talked about in her social circle.