Question

should there be a comma before the highlighted word?
eugene krabs hasnt been able to stop laughing, since you told that hilarious joke.
keep the comma
remove the comma

Explanation:

The word "since" here introduces a dependent clause that provides essential context for why Mr. Krabs can't stop laughing. When a dependent clause follows an independent clause and uses a subordinating conjunction like "since" to show cause, no comma is needed before the conjunction.

Answer:

Remove the Comma