It's inconsiderate to speak negatively about someone else's parents.
Ted's friend Jamal is talking to him about being raised by a single mom.
Ted wants to talk to Jamal about his mom.
Ted tells Jamal that he's lucky to have been raised by such a strong woman.
Ted tells Jamal that she must've slept with a lot of men in the past.
Jamal feels even more proud of his mom and is more confident in himself.
Jamal doesn't feel comfortable and can't believe Ted said that.