| LACERATE | Demolish or tear up a wave. |
| LAKE | No Waves, Like it has been at Ditch Plains, out here we call it "Lake Atlantic". |
| LALA | Totally awesome, mad, cool, sweet, rad. |
| LAMO | Lame. |
| LAND LORD | Great White shark. |
| LAME | Weak. |
| LATER! | See ya - Adios - Hasta La Vista Baby. |
| LAUNCHED | To be thrown in the air, usually from a wipeout. |
| LEASH | Urethane cord which attaches the board to the surfer by means of a velcro strap. |
| LEFT! | What you shout when you catch a wave and intend to go to the left, leaving the right for someone else to catch. |
| LEFT-HANDER | A wave the breaks from the left to right as viewed from the shore. |
| LEGEND | Surfers over 50, men and women. Amazing, should be remembered. |
| LID OR LIDIOT | Bodyboarder |
| LINES | A set of waves outside and approaching easily spotted from the line up. |
| LINE UP | Just beyond the impact zone where you wait to catch waves. The area of surfers already in the water, or the area of the surf beach that is known best by the local community. Usually this is the most dangerous area to surf. |
| LINED-UP | Term to describe an even, well developed swell or set. |
| LIP | The top edge or crest of the wave ahead of the breaking area, which may 'throw out' to create a tube. |
| LOCALS | A group of surfers that grew up or have lived there long enough to be considered one (can be territorial about their breaks). |
| LOSER-HER | Someone who is double loserish. |
| LULL | 1. Time spent waiting for a rideable wave. 2. Time between sets, when the waves are much smaller as in "Wait for a Lull before you paddle out". |