| Acronym | Meaning |
| KYFC | Keep Your Fingers Crossed |
| KYPO | Keep Your Pants On |
| L | Laugh |
| L8 | Late |
| L8R | Later |
| LABATYD | Life's A Bitch And Then You Die |
| LABATYMO | Life's A Bitch And Then You Marry One |
| LAQ | Lame Ass Quote |
| LB? | Like Bondage? |
| LB?W/C | Like Bondage? Whips And Chains? |
| LBIG | Laughing Because I'm Gay |
| LBR | Little Boy's Room |
| LBUG | Laughing Because You're Gay |
| LD | Later Dude |
| LD | Long Distance |
| LDIMEDILLIGAF | Look Deeply Into My Eyes, Does It Look Like I Give A F*ck? |
| LDR | Long Distance Relationship |
| LDTTWA | Let's Do The Time Warp Again |
| LF | Let's F*ck |
| LFTI | Looking Forward To It |
| LGMAS | Lord Give Me A Sign |
| LGR | Little Girl's Room |
| LHO | Laughing Head Off |
| LHOS | Lets Have Online Sex |
| LHSO | Let's Have Sex Online |
| LIFO | Last In, First Out |
| LIS | Laughing In Silence |
| LJBF | Let's Just Be Friends |
| LKITR | Little Kid In The Room |
| LLTA | Lots And Lots Of Thunderous Applause |
| LMAO | Laughing My Ass Off |
| LMFAO | Laughing My F*cking Ass Off |
| LMHO | Laughing My Head Off |
| LMIRL | Let's Meet In Real Life |
| LMK | Let Me Know |
| LMSO | Laughing My Socks Off |
| LMTCB | Left Message To Call Back |
| LOL | Laughing Out Loud |
| LOL | Lots Of Love |
| LOLA | Laugh Out Loud Again |
| LOMBARD | Lots Of Money But A Right Dick |
| LOML | Love Of My Life |
| LONH | Lights On, Nobody Home |
| LOOL | Laughing Outrageously Out Loud |
| LOPSOD | Long On Promises, Short On Delivery |
| LORE | Learn Once, Repeat Everywhere |
| LOU | Laughing Over You |
| LPOS | Lazy Piece Of Sh*t |
| LRF | Little Rubber Feet |
| LSHMBH | Laughing So Hard My Belly Hurts |