Two Mexicans are riding along Pacific Coast Highway on a motorbike. They break down and start hitching a ride. A friendly trucker stops to see if he can help so the Mexicans ask him for a lift. He tells them he has no room in the truck since he is carrying 20,000 bowling balls

The Mexicans ask the driver if he will he take them if they can manage to
fit in the back with their bike, so he agrees. They manage to squeeze
themselves and their motorbike into the back of the truck, so the driver
shuts the doors and goes on his way. By this time he is running late so
he puts his foot down.

Sure enough the Highway Patrol pulls him over for speeding. The officer
asks the driver what he is carrying, to which he replies "Mexican eggs"

The policeman obviously doesn't believe this so he asks to take a look.
He opens the back door and quickly shuts and locks it. He gets on his
radio and calls for immediate backup from as many officers as possible.

The dispatcher asks what emergency he has that requires so many officers.

"I've got a trucker carrying 20,000 Mexican eggs - 2 have hatched and the b*stards have already managed to steal a motorbike ".