Mentally Constipated

1. So full of shit nothing credible can get in.
2. Just won't let go of the bullshit.

Usually caused by propaganda and or confirmation bias.

He's mentally constipated in that he still believes regardless of fact, the election was stolen.

constipated baby

Not being able to take a shit

Yo I be sitting on the toilet for hours.

Oh yea, you a constipated baby