Blutz

A fart directed at someone during a phone conversation after posing a leading question.

A skillful blutz involves asking the target a question regarding a topic with which they hold an interest, prompting an enthusiastic reply whereby one 'blutzes' them mid sentence.

You: 'Do you keep your ketchup in the fridge?'

Them: 'Nah, it's full of preservatives so by the time...'
You: *blutz
Them: *silence
You: 'I just blutzed you, are you OK?'
Them: *laughs/*hangs up