Bored Panda interviewed Lee Glanville, the owner of "Ominous Signs" Instagram page, and asked him about his inspiration for the page. Glanville said, "I saw a few signs online that had a threatening energy to them and thought it would be funny to collect them into one place." He added that he likes signs that suggest "an authority figure is threatening you," as there is something funny about that.

Lee also shared that he has a particular fondness for the "children drive slowly" sign and believes that children should not be driving at all. He said, "Personally, I don’t think they should be driving at all." When asked about how he sources the images for his page, Glanville said, "I find most of them online and credit where possible, but people can and do submit images as well."

The sign that generated the most engagement and sparked the most interesting discussions among his followers, according to the page owner, is the "please do not smile at strangers" sign in a train station. He believes that most people would rather be left alone during their commute. When asked about the future of the "Ominous Signs" Instagram page, Lee said that he is currently only focused on posting on Instagram. However, he mentioned that he has another project, an illustration account, that you Pandas, might want to check out as well.

In summary, Glanville's inspiration for "Ominous Signs" was the humorous and threatening nature of certain signs. He particularly likes signs that suggest an authority figure is threatening you, and he finds the "children drive slowly" sign particularly amusing. Lee sources the images for his page online and from submissions by his followers. The "please do not smile at strangers" sign in a train station generated the most engagement among his followers.