The image presented appears to be taken from a first-person perspective, looking down at the person’s lap while they are seated on a toilet. The photo showcases the person's lower half; they are wearing blue jeans unzipped and partly lowered, and between the jeans and the undergarment, two noticeable items are placed: a gun and a large knife, which look to be casually tucked into the waistline.
At the top of the image, there is an overlaid text that reads, "I carry everywhere I go – always be prepared!" This statement, along with the placement of the items, suggests a level of humor based on an exaggerated interpretation of the concept of being prepared for any situation, extending to the most private and unlikely scenario — while using the bathroom.
The humor in the image arises from the incongruity and hyperbole of being armed while engaged in a vulnerable and mundane activity like using the restroom. It plays on the idea of someone taking the concept of self-defense or preparedness to an extreme level, where even a moment of solitude in the restroom cannot be spent unarmed.
It could also be seen as poking fun at the machismo or overzealous caution of certain individuals who insist on being armed at all times. The contrast between the normally relaxed setting of a bathroom and the serious, readiness-implied items such as a gun and knife contributes to the comedic effect.
There is also an element of satire here, as the image may be seen as a commentary on the gun culture in some places, where firearms are a common part of one's daily life and identity. The humor might come from highlighting the absurdity of feeling the need to be armed even in the most intimate of circumstances.
Some might find the image humorous as a form of self-deprecation if they themselves have a habit of carrying items for personal safety. It becomes an inside joke among those who carry for self-protection, acknowledging the perceived absurdity in a lighthearted way. However, for others, the association of weapons with a private setting may not be amusing due to differing views on gun control and safety. I carry everywhere I go always be prepared