Two cockroaches fall down in a toilet bowl and find themselves in a big pile of, well, excrement. They both then proceed to eat whatever it is that they fell down in.
Half an hour later one cockroach goes to the other: Man i am SO full. I have to go take a dump.
To which the other cockroach replies: Yaar, khaanay kay waqt to aisee baatein na karo!