Acronym for "Hammered Dog Ass". Completely lacking in aesthetic merit, extremely ugly, displeasing to the eye and viscera. The resulting visual summary of an already homely subject after a losing impact with something large, heavy and iron.

May also be used to express feeling under the weather, i.e. "I feel like____."

A term used to reference cannabis/marijuana/weed.

"HIGH DEFINITION ASS"
The perfect ass in jeans!

Horny DumbAss is a disease often shortened to HDA. HDA is commonly caused by Water Wiggles, an old trend.

Head Disk Assembly, the part of a computer's hard drive which stores the data.
Typically when a drive experiences the Click of Death (ake the OMGWTF I just lost my data) noise the head comes in contact with the disk due to the collapse of the micrometre thickess air bearing from contact with a particle, resulting in massive damage known as a head crash.

Normally the end result is a bricked hard drive, which is recoverable if you are lucky and have a couple of K$ to spend on data recovery in a clean room.

Interestingly a hard disk will instantly crash if opened up and smoke blown onto the disk while spinning, useful for demonstration purposes but ruins the drive

Sometimes a failed drive can be salvaged by the careful replacement of the head assembly from a donor drive, this is a last resort and can make things worse in most cases.

Hands-Down Adorable- someone who is so cute it's almost unbearable

"Hit Dat Ass"