Pull the pin. Confetti pop out the top 🎊 It's real fun.

A can of tuna duh 😂 ✌️ open it up and eat it

a WW2 landmine

I'm glad you know. Those who don't know what this is, will end up killing themselves and/or others if they find it.

I am good at WW2 history

It looks like a roomba and a land mine

It’s either a bomb or a water canteen thingemajig.
A pretty big gamble either way

then why does it have a striker pin

Aesthetic

I think its a US army landmine from 'nam

That’s definitely a possibility