According to Vivian (YouTube Channel Vivian Tries) Fungalitus is present on items that you think are clean but you're not sure.
I just got these new metal straws at the Dollar Store. They are probably okay to use but I think I'll put them through the dishwasher just in case they have Fungalitus inside that I can't see.
term is used when someone is so damn appealing that they are "fuckalious". similar to fuckable, but on such a higher extent, that its not even close. it can also be used as a catchphrase.
dude 1: dude...like daamn, that chick is so fuckalious...i would fucking bang the shit outta her ass through her cunt...
dude 2: dude...thats so nasty, but so fucking hawt, that u just gave me a boner, and i think i came a bit.