CSS Humor

.coffee {
  color: black;
}
.coffee::before {
  content: "Zz";
  position: relative;
}
.coffee::after {
  content: "BOOM!";
  position: absolute;
}

From @_CodeGears_

#MGS .solid_snake {
  transform-box: view-box;
  visibility: hidden;
}

From @_CodeGears_

.party .bottles:after {
  content: " ";
}
.party .floor:after {
  content: "diced carrots";
}

From @ramriot

.drunk {
  position: absolute;
  bottom: 0;
  overflow: hidden;
}

From @jelicanin

.b-21 { display: none; }

From @_SuperBolt_

.avatar.navi { color: blue; }

From @ToshCamille

#burj-khalifa { height: 82800cm; }

From @yuxel

.tetris .line-block { line-height: 4; }

From @IAmAdamTaylor

.flex-zone { display: none; }

From @boymanjor

#topchef { display: table; }
#topchef menu:after { font-weight: bold; }

From @GillesCC