"Juan and Amal Classic" joke
A California couple discovered the wife was pregnant, but the family simply couldn't afford any more children. They looked around and found an excellent Hispanic family to adopt the child. Then they found out she was going to have twins. Fortunately, a family of Arab Americans agreed to adopt the other child. Twin healthy boys were born and passed along to the families, who named them Juan and Amal.
The biological parents kept in close touch with the adoptive parents in a very amicable relationships. One day, Juan's family sent a picture of the youth in his baseball uniform. The biological mother was so proud of her son. She said to her husband, "He is so handsome! I wish we had a picture like this of our other son, too."
He replied, "But dear, they are twins. When you've seen Juan, you've seen Amal!"
At a convention of biological scientists one researcher remarks to another: "Did you know that in our lab we have switched from mice to lawyers for our experiments?" "Really?" the other replied, "Why did you switch?" "Well, for four very good more...
Some biological researcher experimented with a flea. He puts it on the table and says: "Jump!"
The flea jumps 3 meters, so he writes down to his log: "The flea has jumped 3 meters."
Afterwards he cuts one of its legs off and says again: more...