Slop grenade meaning:
Generally refers to a large piece of writing or code that someone has generated using AI and without reading it just throws it to someone else to read or review it
There is even a dedicated website here which is the new lmgtfy that you can share with all your colleagues when they throw you one.
The term "slop grenade" was actually coined in a video interview on the Knowledge Project with the Shopify founder and CEO Tobi Lütke, which you can watch here.