Helpful tip: there’s a setting in Firefox to block all notification requests. It’s under Settings > Privacy & Security, then scroll down to the Permissions heading. Click the “Settings…” button next to the the Notifications entry and tick the box for “Block new requests asking to allow notifications”.
I assume there’s an equivalent in Chrome, but I don’t know what it is off the top of my head.
Ninja edit: Removed my attempt to hyperlink directly to the relevant Firefox settings page because it wasn’t working.
Every episode seems to have one joke that really gets me. In this one it was Mariner stopping mid exclamation to make sure she correctly named the platonic solid that’s about to eat her.