No, it's not Mommy. Who is it, Dr. Lesh?
5 seconds sound clip from the Poltergeist (1982) movie soundboard.
You can hear this line at 00:50:36 in the Blu-ray version of the movie.
Quote context
[...]
- Mommy, there's somebody here.
- No, it's not Mommy. Who is it, Dr. Lesh?
- Mommy, somebody's coming. Mommy, help me, please!
- You bastard! She's just a baby!
- Help her! Can't you hear what's happening? Help her!
[...]