Lemon Grenade Mug by CoolShitiBuy When life gave Valve lemons, they didn’t make lemonade. Instead, they invented this awesome Lemon Grenade Mug! Not only is this mug’s look inspired by Portal 2, but the function is as well, because it features a pin that actuall... 1 2,685 $15.99 via Amazon Facebook Pinterest Save1 Check it out