Sixteen Sodium Particles

Listen up, buttercup. This is a chemistry joke, so it requires at least two brain cells. Sodium's symbol on the periodic table is "Na". If you have 16 "Na"s, you get "Na Na Na Na Na Na Na Na Na Na Na Na Na Na Na Na", which sounds like the Batman theme song. Batman followed the sodium particles to the bar because of this. Since you like this joke, you probably shop at Dollar General for your lab equipment, so maybe stick to stick figures and leave the science to the smarties.