Defecation of character

Talking shit about your good character; shitting on your good name; spreading lies about you that are not true.

I am going to sue you for defecation of character if you don't stop talking about me and spreading lies.

defecating a bomb

The action of exploding a toilet by taking a shit

I’m gonna be defecating a bomb.

defecation head

another way of saying poop head

person 1: you are a poop head
person 2: well you are a defecation head

defecation interruptus

The act of preventing someone from having a well deserved, urgently needed, and much anticipated bowl movement by asking them to do one more chore before he disappears into the bathroom for an indeterminate amount of time.

John hated when his wife engaged in defecation interruptus by asking him to take out the trash as he headed toward the bathroom for a little quality time with the newspaper.