"First Day of Grade Three" joke
Johnny had just moved to a new town and was attending the first day of Grade Three. As a test, the teacher asked the students to count to 50. Some did very well, and counted as high as 30 or 40, with only a few errors. Others couldn't count past 20. Johnny did extremely well though. He counted past 50 and right up to 100 without any mistakes at all.
He was so excited, he ran all the way home and told his father how well he had done. His father nodded and told him, "That's because you're from Alabama, son."
The next day in language class, the teacher asked the students to recite the alphabet. Since it was Grade Three, most of them could make it halfway through without very much trouble. Some made it as far as S or T, but Johnny rattled off the alphabet perfecting, from beginning to end.
Again he rushed home and bragged to his father how well he was doing in his new school. His dad, knowingly, nodded and explained, "That's because you're from Alabama, son."
The following day, after Physical Education, the boys were all taking showers. Johnny noticed that, compared to the other boys in his class, he seemed to be overly 'well-endowed'. This really confused him.
That night he told his dad, "Dad, the boys in my class all have little tiny ones, but mine is ten times bigger than theirs. Is that because I'm from Alabama?"
"No, Johnny," his father explained, "that's because you're 18!"
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