Cave Johnson made a lot of fuss about combustible lemons in Portal 2, and it seems that one inventive gamer took his sage advice to heart.

You might remember Chris Myles, a.k.a. Ammnra, as the crafty gamer who made these real life Portal 2 personality cores. Not one to rest on his laurels, Ammnra is at it again, this time making Aperture Science-themed lemon grenades. Ammnra just posted pictures of the invention on his Flickr account along with detail about how the creations were made, in case someone wants to follow in his footsteps.

“Tops from some old airsoft bb loaders, random springs to make the spoons fly off when you pull the pins, some paper plus modge podge labels, and a hacked greeting card so when the spoon comes off Cave does his rant and then a big BOOOM.”

[Source: Reddit]