a smiling gun

The gun is happy as he is shooting people

a black gun, shaped like a box, with a flashlight in the shape of a happy face

A square gun, shooting a block, next to a flashlight

wallet shots brick with switch on lamp

lamp on , lamp off

give a man a lamp hat, he's happy for a day, take it away and he grows caterpillars above his eyes, angry ass caterpillars

Sad face?

PAC man realises he has no more pills to eat