Chemicals? LCD display? uController? WiFi? This is potentially the second most over engineered bugzapper I have ever heard of. First place ofcourse forever belongs to the "photonic fence" based on Star Wars tech to shoot the suckers with a laser.
I've never heard of this joke before but as soon as I saw the board I laughed and laughed, it's hilarious. As an "oldie" I feel an microcontroller is a little bit overkill for the flashing though as a good ol' 555 would've done just fine. in fact with a few added components and a 556 it should be quite possible to get some cute random actions into the circuit while getting the impressionfactor up a bit.
YES! Weeeeeeeehhh!!! Oh, thank you thank you thank you thank you thank you thank you thank you thank you thank you thank you thank you thank you thank you thank you thank you thank you thank you thank you thank you thank you thank you thank you thank you thank you thank you thank you thank you thank you thank you thank you thank you thank you thank you thank you thank you thank you thank you thank you thank you thank you thank you thank you thank you thank you thank you thank you thank you thank you thank you thank you thank you thank you thank you thank you thank you thank you thank you thank you thank you thank you thank you thank you thank you thank you thank you thank you thank you thank you thank you thank you thank you thank you thank you thank you thank you thank you thank you thank you thank you thank you thank you thank you thank you!