NEURON

Noun. When a neurotic person is so wrapped up in their own wants and desires that they are oblivious to the needs of others.

Neuroticism in full swing

Leah....."Girl, I cant believe your brother could be such a neuron today!"

Stacy...."I know, right?! Aint no way he went to kfc and didnt get us a d#mn chicken leg!"

(Both heads shake in disappointment and disapproval)