Pop a Cesium pill

A much more brutal version of "kill yourself."

It's so mean, because is you where to pop an actual Cesium pill it would blow you up from the inside of your digestive tract.

Joey: Heheh, hey Tom! I saw Timmy with your GF last night!

Tom: yeah? Well you can both go pop a Cesium pill, dickhead.

Joey: Jesus man! What the hell's your problem?