"Ask Ashley" could be making a HUGE comeback ... with a dirty twist ... because TMZ has learned, Playboy is offering Amanda Bynes her very own radio show.
Playboy Radio offered Amanda a guest hosting gig yesterday -- but now, a rep for the station tells TMZ, execs want her around FULL-TIME ... and have officially submitted an offer for Amanda to host her OWN hour-long daily radio show.
The offer is for a one-week trial ... but if all goes well, we're told Amanda can extend the deal to a full year.
Playboy's pulling out all the stops to make her feel welcome too -- we're told the org. is willing to provide Bynes with a driver to take her to work ... as well as her very own producer to handle the show's logistics.
FYI -- Bynes became a breakout star on "All That" back in the day thanks to the popularity of her "Ask Ashley" sketches ... when she would give crazy advice to fans.
2:36 PM PT -- We JUST heard back from Bynes ... who, unfortunately, delivered some bad news for Playboy.
"I want to [do the show]," Amanda said ... "But I can’t because I’m recording an album!"
Sidenote: Amanda says she's an aspiring rap star.
But Amanda says she won't leave Playboy hangin' ... telling us, "I’ll go on their show for an interview when I’m promoting my album."