What does "gel up" mean in slang?

What does gel up mean in slang? Gel up in slang has a few meanings depending on context. As verb phrase meaning to style hair with gel, gel up means to apply hair gel to make hair spiky or hold in place, as in he gelled up his hair for party. Figuratively, gel up in relationship or team context means to bond, solidify, and become cohesive, as in we gelled up as team after training, meaning we bonded and work well together, or couple gelled up meaning relationship became more solid and committed. In some youth slang, gel up can mean to become firm or to prepare, like gel up for event. In British slang, gel up not common but gel means girl. In some regions, gel up could mean to get ready or to set. So slang meaning of gel up is to apply gel to hair for styling, or to bond and become solid as group or couple, indicating process of cohesion, preparation, and solidification, whether hair styling or relationship strengthening.