A noob fruit is a homosexual noob, called so because of 'going gay' on somebody and being a noob at almost the same time or the same time. Some good examples...
Zac NewtonFruitNoob
A fruit = homosexual of some kind
A noob = ....noob?
The fruit version of vorarephilia, (often shortened “fruitvore) a sexually fruitvore of being eaten alive
Mmm you taste good, I think it’s called “vorare-fruit-ia” get it? “Vorarefruitia”? You know, it’s the fruit version of vorarephilia, nuahahahahahahahahahahahahahahahaha!