Isotta said:This is like asking for "one biscotti," English doesn't observe singular and plural rules in Italian. Thus I think it would be, albeit incorrect, "That graffiti is funny."
Sabelotodo said:Yes, that's right. When we English-Speakers borrow words from other languages, we don't always borrow the rules for using them. (How inconsiderate of us. )
In English, graffiti is both singular and plural like "deer" and "sheep."