Here's how it can be interpreted:
* Lack of direction: The person might be indecisive, changing their mind frequently, or not having a clear goal in mind.
* Spontaneous and impulsive: Their actions could be driven by sudden urges or whims, without much forethought.
* Unpredictability: It can be difficult to anticipate what they might do next because their behavior seems to be random.
* Absence of usual patterns: They might be acting out of character, deviating from their typical behavior.
The phrase can be used in a variety of ways:
* As a playful observation: "You're feeling pretty random today, wanting pizza for breakfast!"
* As a concerned question: "Are you feeling pretty random? You seem a bit out of sorts."
* As a criticism: "Your decisions have been pretty random lately, you need to be more focused."
Ultimately, the meaning of the phrase depends on the context and the speaker's intention.