Acronym, often used in text, for 'lawd hab mercy.'

1. Used when one finds something so exhaustively unteachable it would be unfair to punish such naivety.

2. Asserting buffoonery.

3. Sometimes used in response to sensational experiences. An unbelievable event.
Ten year old Kijon runs to his mother Kristi in excitement waving the stool he found in the toilet and Kristi, shaking her head, sighs "lhm!"

I haven't seen Candice in years, lhm she's all grown up now!

Lhm I'm stuffed! Great meal.
by Uncle Bill McGyll October 12, 2011
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LHM stems from a limited usuage in AIM and is an acronym which means "Laugh Heartily (to) Myself". It is generally used in place of "lol" by people who don't generally use the "lol" acronym.
by Thomas Brownlee October 03, 2005
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