Most meme coins experience price spikes that only last a short time and usually this will happen after a FOMO by a celebrity or public figure so some people are afraid to miss the train if they don't buy the meme coin, but once people who enter early have managed to take advantage they will throw it away with a large amount it will cause the price to go down again basically because so far there are no fundamentals of the meme coin that can help maintain its price.