A troglodyte is typically used as an insult as someone is a really stupid/ ugly or you just want to insult them

to sport a boner, fly the sail at full mass, rock hard, etc.

People who touch the screen of the apple computer in the uni library even though they’re not touchscreen

A person considered to be reclusive, reactionary, out of date, or brutish.

The kind of person that makes you wonder why humans aren't extinct yet.

1). A cave-dweller, someone who lives in a cave.

2). Insult used by Captain Haddock from the Tintin series.

A lower-functioning subspecies humanoid that usually inhabits subterranean dwellings, and enjoys frequenting Wal-Mart. They tend to chiefly subsist on some form of government/taxpayer assistance. Also, their young are typically referred to as hatchlings.