Most people have a special type of bond with their siblings. twins for instance often create their own language that only they can understand.
my sister and i always tell each other when we poop. This might seem strange to most people, but well that's just how we are... and it's never just "hey man i just pooped" its usually something like "hey i just pooped a wolf eel." or "i just pooped a stadium full of potatoes" or "i just pooped a five pound block of cheese"
The exaggeration is often a subtle description of the size of shape of the poop and even sometimes the sound of effect it has on the toilet.
what was your last poop like?