By a strange coincidence, 'None at all' is exactly how much suspicion the ape descendant Arthur Dent had that one of his closest friends was not descended from an ape, but was, in fact, from a small planet somewhere in the vicinity of Betelgeuse.
16 seconds sound clip from The Hitchhiker's Guide to the Galaxy (1981) - Episode 1 sitcom.
You can hear this line at 00:04:41.522 in the Blu-ray version of the TV Series.
Quote context
[...]
- Ever thought of going into advertising?
- You won't get me like that, either.
- He will enter our story in 30 seconds and say, 'Hello, Arthur.'
- Earth men are not proud of their ancestors, and never invite them round to dinner.
[...]