The lineup is a noun that refers to the calm, deep area beyond the breaking waves where a surfer waits for the next wave. Surfers often talk and socialize in the lineup while waiting for waves. After watching for where good waves are breaking, surfers use landmarks on the beach to find the best spot to wait.
miko 
because “Sitting in the lineup is always better than sitting in the beach”
Definition of the lineup:
The lineup is a noun that refers to the calm, deep area beyond the breaking waves where a surfer waits for the next wave. Surfers often talk and socialize in the lineup while waiting for waves. After watching for where good waves are breaking, surfers use landmarks on the beach to find the best spot to wait.