Dense

[Donald Trump]

Stupid

[Zipporah Schumaker]

Someone who lacks common sense, acts like an idiot and makes a fool of themselves without realising.

[Tina]

not exactly stupid, the person can be book smart but can also be: thick headed, clueless, lacking common sense, unable to catch onto hints

[Rihanna]

1. adj. slow, thick, dumb
2. n. a) a really slow person (who should most likely be hit on the head with a frying pan)
   b) my friend Dennis who likes to type with his head flat on the table shouting I AM GOD!!!

[Hina Muqadas]

Being very ignorant, and or difficult

[Rihanna]

Somone who is oblivious to everything.

[Jason Yan]

When something is sick or phat

[Raeanne Dimick]

dense:

(adj.) relating to matter per unit squared [science]
(adj.) someone who lacks common sense, or humiliates themself
(n.) someone of ignorance; someone of disgrace

[Couch Potatoe]

Closely compacted in substance.

[Tina]

[Whenever] someone [says] something [retarded]