Think of a horse...

Aphantasia is a phenomenon in which an individual cannot conjure an image of a face or thing in their minds. There is no inner ‘mind’s eye’ in these people and the mental imagery is essentially blank. People with Aphantasia can explain the object using words, but the mental image...

• Bodily-kinesthetic intelligence: the capacity to control your body and handle objects skillfully.
• Interpersonal intelligence: the capacity to find and respond in the right way to the moods, motivations, and desires of other people.

Scientist would argue first that the thought you had was not spontaneous and random. instead, your thought was likely a reaction to something around you.

In this case, it might have been an alarm clock, checking your phone to see what time it is, or hearing something like the garbage truck ...