It is when a heifa (in most cases a male-but can also be a woman) acts very stupid, uncaring, and senseless. These people tend to be egotistical, rude, self-centered, HIGHLY inconsiderate, and tend to ignore the feelings of those around them. The people also tend to have another called CHD, or chronic hand disease. There is no avoiding these type of people because it is something one can develope over time and there can be different levels on the heffadonkis spectrum.
Why did you throw my ish on the floor? That was brand new!! Because I felt like it and I don't like you, is there a problem? Yes, heifa, there is a problem! YOU ARE SUCH A HEFFADONKIS!!
A female that is getting on your last nerve. One of them hoes that don't know their place or when to shut the fuck up. It could be a nasty hoe as well.
A heffalump is a creature mentioned in the Winnie the Pooh stories. Original books depict heffalumps as looking very much like elephants. Pooh and Piglet fear heffalumps, and in an attempt to cover their fears they attempt to bravely capture a heffalump in a trap. But no heffalumps are ever caught in their trap, and indeed no heffalump is ever met within the course of the books aside from those that appear in Pooh’s nightmares, wherein they are very fierce and are intent on stealing Pooh’s honey.
A heffalump has also become a term of abuse for a fat person and or oaf, similar to Jabba, as in Jabba The Hutt.