[Dave]

Secretary: ...four weeks and your can go long distance.
Jack: That won't be a problem!

The jokes were class, but on second viewing the plot holes develop:

They couldn't have made a great amount of money out of the odd van load of red meat, not split four ways. They could even afford their own van. Yet, they had rented this huge warehouse. This alien Manatee apparently began life very much smaller when they found it. So, we did they think they needed such a large warehouse to contain it?

Also, a man with a foriegn accent has just told you that the creature you have been keeping is an alien. What do you do? If you believe him then you are hardly likely to get prosecuted in court. So, why do you then shoot the woman/man who "lied to me"? Something like Murder, then you are certainly going to go straight to prison. Rather, instead wouldn't you shoot the man who is talking absolute rubbish about aliens from another Galaxy instead?