1-dimensional

Used to call someone who is daft, boring or an idiot

When a joke lacks depth or multiple dimensions but you still can't help it but laugh. The joke often contains stereotypical, dorky, and/or unfiltered humor and references.

This is not to be confused with a non-dimensional joke, which results in complete silence and awkwardness.

In a text or chat context, it is often shortened as '1D'.