a hybrid of an exclamation point and a question mark.
it looks like like a question mark but the bottom part is squiggly instead of a line.
One:
Samer- hey preston, i got my wrestling pin with Luis
Preston- WITH OUT ME?!?!?!
Luis- uuhhmm yeah. nice use of a gravity mark btw
Two:
Preston- this is me skiing
(shows his fingers fly off the desk)
Preston- someone get the hubble
Samer- i bet i can go further cuz i have zero gravity
Preston- i dont know the definition of gravity, is it grammar?
Samer- yes it is, it is the combination of an exclamation point and a question mark :)