Amanda Bynes -- $2,000 Munchies Bill at the Ritz

Mmmmmmm Ritz -- TMZ has learned, Amanda Bynes ran up a super stoner bill at the Ritz-Carlton in NYC this week ... ordering more than $2,000 worth of room service before getting the boot on Thursday.

As we reported, Bynes was ejected from the hotel for smoking weed inside her hotel room, as well as for being intolerably rude to hotel staff. Bynes denied the allegations, but her hotel bill, obtained by TMZ, appears to back up the hotel's story.

According to the bill, Amanda racked up nearly $9,000 in charges, staying in a $700-a-night room -- and $2,389 of that bill came from room service orders.

The bill shows Amanda placed nearly FORTY (40) separate room service orders -- and we're not talking a side of fries here and some nachos there ... each order averaged roughly $60-70 a POP.