I can be there and then I'm gone, leaving you puzzled all day long. I appear once a year, then I'm through. What am I, can you guess the clue?
I was once called an embryo, but I have now gone through more than eight weeks of development, so my name is now changed to what?
I come once a year, a day of cheer, A time to laugh and not to fear.
My jokes are many, and some are bad, But they're all in fun, so don't be sad.
I'm not a holiday, nor a festivity, Yet I'm celebrated with much levity.
What am I?
Once you are in my sight, you are gone in a flash, and people tend to use me for cash. I am often used as a dire assist, and people often believe that I cause harm, when I am but its catalyst. What am I?