Definition of "twinkie"

This twinkie was enveloped in an oversize parka with the hood pulled so far forward that all that could be seen of his face was a frostbitten nose and a microphone.

1994, Dana Stabenow, A Cold-Blooded Business, page 15

Indeed, this unexpected emergent talent could propel Barrymore to an acting orbit adjacent to that of her Gardens co-star, Jessica Lange – who, let's remember, started out herself as a big-screen twinkie, in the 1976 King Kong, as the big ape's unwilling object of affection.

2009 January 13, Rob Salem, “Pressure of Grey Gardens Gives Barrymore the Jitters”, in Toronto Star‎

Tom Ford, who said he was “a twinkie” at Studio 54 in the days when Halston hung out there with Liza Minnelli, Liz Taylor, Bianca Jagger and Warhol, was also impressed with Mr. McGregor and the show.

2021 May 7, Maureen Dowd, “Ewan McGregor: Dahling, He’s Halston!”, in The New York Times‎