Forcing operator_ (underscore)

This question is for fun, I know that I cannot define operator_.

However, I'd really like to "bend" this rule, having something like the following as valid (with valid being loosely defined!).

T result = somevar _ someother;

I didn't come with a possible solution, but maybe you can, possibly using some preprocessor übertricks. (Of course just #define _ SOMETHING is quite a bit dangerous)

Any help is greatly appreciated!