I just watched it and it’s peak 90s:

1. Kramer calls from a payphone
2. Kramer makes a collect call and puts his message as his name
3. Jerry answers on the overly large wireless phone
4. Nobody has a cell phone or any way to communicate after Jerry leaves

Nothing in this snippet would make sense today, it’s glorious.

This is probably my favourite joke in all of seinfeld.
Or the monologue from “The whale marine biologist”, with the line of “The sea was angry that day my friends; like an old man trying to send back soup at a deli”