I recently encountered the following party game: Mumbo Jumbo, based on trying to pronounce a word while wearing a mouth-stretcher. Basically, you wear a mouth-stretcher, and then you are asked to read out a phrase. Your teammate has to figure out the phrase you're trying to say.
The mouth-stretcher means that you cannot make labials. Of course, the words are selected to take advantage of this limitation as much as possible, asking you to make phrases like 'the moose makes molasses.'
But if you know about phonetics, you should be able to figure out a way to get around this limitation. For example, you could use a substitution of [n] for [m] since both are nasals: 'the noose nakes nolasses.' 'nakes' and 'nolasses' aren't words so hopefully your interlocutor will take advantage of error correction to figure out that the words are 'makes' and 'molasses.' 'noose' is a real word, so they may need to try twice to get the phrase correctly.
Similarly, what about something like 'feel the breeze'? [f] and [b] are not available to you. You know [f] is a fricative, so maybe you think to go with 'seel' as a substitution. But 'seal' is a real world and that might confuse your interlocutor. You could try a voiceless 'th' instead, which is more similar to 'f' anyway (as f-substitution shows). This produces the nonsense word 'theel', which hopefully your interlocutor will correct to 'feel'.
How about for communicating 'breeze'? You have a few voiced stops you can use like [g] and [d]. If the plastic mouth extender isn't totally rigid, you could also take advantage of the McGurk effect to move your mouth down as if making a [b] and then producing a [g], hoping that your interlocutor will take the hint that the labial movement matters.
While this game is based on using a plastic prop to force your mouth into not producing labials, I feel like you could extend the concept for linguists as a party game. How about a game where you cannot use stops? Or no alveolar consonants?
I've written about another game where knowledge of phonetics can give you an edge - karuta, a Japanese card game.
