>>'My ex-boyfriend's grandmother is literally 110,' and I'm not >>trying to make a joke about how old she is, she really is 110."
Not to be a stickler, but unless this is his grandmother's birthday, and she is turning 110 years old right...NOW, then she's not literally 110: She's literally 110 years, 2 months, 3 days and 2 hours old.
I know you disagree, but I don't have a problem with the "literally across the street" thing. Used judiciously, the word adds clarity. You could say, "I'm across the river from my buddy's ranch," and still be 50 miles away. Adding that one word, again,if done properly, provides detail: One could say, "I am LITERALLY across the river from my buddy's place. I can see his pool from here!" Now you get a sense of how close he is.
That works a bit better... you know it does!