What is the meaning of “in that parents’ basement sort of way”?

What is the meaning of parents’ basement?

In that parents’ basement sort of way

He’s kind of cute, in that parents’ basement sort of way


Solution 1:

This refers to the stereotype of men who live with their parents (often in the basement) for an abnormally long time after graduating high school and/or college.

The stereotype depicts men who are "nerds" and are socially inept. For some women, this can be an endearing quality.