Exclamaniac
Someone who uses a lot of exclamation marks, such as in chat or emails. (This author is a serial exclamaniac!!!!!)
Oh geez, Karen wrote again and exclaimed all over the place. She's such an exclamaniac
Hello there!!!!!!!! Whatcha been up to??!!!!!!!Love and hugs, Karen!!!!!!
Hello there!!!!!!!! Whatcha been up to??!!!!!!!Love and hugs, Karen!!!!!!