LMUOF
After a casual interaction with someone who interests you, and you'd like to get to know them better, or seek a date with them, asking them to LMUOF you is a great ice-breaker.
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lmoof
A combination of lmao with oof, used alternatively to lmaoof as it is more easy to pronounce (le + moof). Used primarily after recognizing the humor in a situation where you're being mocked, but can also be used to disguise the pain when being mocked.
lmdofsalttioahahtgttdtgicmylyaoshtysfoaydyt
laughing my dick off for such a long time that i obtain a hernia and have to go to the doctors to get it checked meanwhile you're laughing your ass off so hard that your sombrero falls off and you drop your taco.
lmdofsalttioahahtgttdtgicmylyaoshtysfoaydyt by D-Lew September 4, 2010
lmaoff
Not yet official, but may be seen used on msn or other online messengers. it is derived from lmao, meaning "laugh my ass off" in online terms. the extra two "f"'s at the end have no real point, but are possibly used to show that the final "o" is "off" in full terms, which is still pretty pointless. A Red haired man is credited with creating the term.
lmaoff by Timmyohtimmy December 25, 2007