This is the hour from which you first notice you need to take a shit. If you don't shit within this hour time frame, it is possible that you will not need to shit for quite some time. So take advantage of the shit window and do not miss it, because if you do it can lead to being constipated and force you to carry this extra shit around with you for an undisclosed time. And who wants to carry around extra shit?
(similar to the caffeine window (sort of))

A buzz word being used to refer to creators and influencers forming or encouraging unhealthy relationships with their fans. Usually used in the context of young audiences feeling they have a relationship with the influencer due to the huge amount of the influencer’s content they consume. The influencer in question, however, is unaware of the fan’s existence other than the general knowledge of having fans. Common examples include Dream and his stans. These relationships are exacerbated by the influencers confirming they have more than a creator-to-viewer relationship.

The word is circulating due to various YouTube essays about the phenomenon using the word, and therefore people who enjoy complaining about influencers repeating what they heard in the video in any comments section they can find.

The amount of time you have to defecate after feeling the initial 'twinge' in your bowels. Length of allowable time varies drastically by person, and type of feces: Usually anywhere from 'right the fuck now' to 72 hours.