A short post!
If this actually happened, I'd want to be ready to pounce and produce a joke. I'd be asking myself everything I know about ponds and would certainly encounter the words 'stagnant' and 'stagnate' during the process.
a little bell
Once we've dressed this idea up a little, we get today's Joke for today:
the joke for today
Something good did come out of this though: whenever we went into a pub, the smell from Gary's duckweed-covered trousers drove other customers out and we got served straightaway.
I'd like to add that we didn't go back the way we came.
The second and third paragraphs / lines are there to illustrate how a speaker might come down from a strong gag before moving on to the next.
At a wedding, you've normally got a slightly tipsy audience in front of you, who are likely to be totally on your side. The punchline 'from 'stag night' to 'stagnate' will very likely make such an audience laugh... and all it is really is a simple near-pun.
I strongly suggest that you can.
Why not find a rhyming dictionary (on online one is fine) and scan through looking for puns and near-puns that might become gags and try to package them?
Keep trying and you'll get there.
Cheerio for now!