Phone calls

It reminded me of something funny when i was making a call just now.

True story:
Once upon a time (probably 3 to 5 years ago), there was this person A called me through mobile phones. So i picked up the phone and answered the call.

Me:  Hello~
A: Hi.. Are you busy right now?
Me: Yeah, I'm a bit busy at the moment.
A: Then ah, i continue speaking la~~ blablablabla

What's the point of asking me if i was busy or not since he intended to continue speaking anyhow? Speechless.