I am referring to the interrobang, which I had never heard of until a friend recently told me about it. A “new social media icon” according to The Guardian, the interrobang is a non-standard punctuation mark—?! or !?—used at the end of a sentence that asks a question in an excited manner, expresses excitement or disbelief in the form of a question, or asks a rhetorical question. For example:
• You won the lottery and you’ll never have to work again?!
• The IT department said “no” to your request for a bigger email in-box!?
• You haven’t submitted any expense reports since February!?
In the spirit of combining punctuation marks to create something new, how about putting together the period and the question mark. You could use these marks together to express doubt about a statement.
• Earth is only 6,000 years old.?