Scenario 1:

Sheldon: would you like to hear a classic Sheldon Cooper factoid ['fæktɔɪd]?

Leonard: what do you think?

Sheldon: great. I’ve been doing some reading about vehicular [vi'hɪkjəlɚ] safety. Did you know that the highest number of drowning accidents happen on or around boats?

Leonard: interesting that you would bring that up when I might go work on a boat.

Sheldon: well, that’s the thing about factoids, they are interesting.

Leonard: I know what you are doing. You don't want me going on this research trip because you are afraid to be alone.

Sheldon: I’m not afraid to be alone, on land. On the sea, it would be terrifying, because of all the drowning.

Leonard: Sheldon.

Sheldon: fine, no more drowning talk. I’ll change the subject. Who do you think would win in a fight, you or a shark?

Leonard: look, I appreciate your signature ['signətʃə] blend [blɛnd] of concern for me and incredible selfishness ['sɛlfɪʃnɪs]. If I get the chance to do this, there is nothing you can say that’s going to stop me.

Sheldon: very well. Things between you and Penny have never been better. I hope four months apart doesn’t change anything. I should have opened with that, huh?