This specific file name refers to a Polish-dubbed or subtitled release of (Dwa i pół), Season 5, Episode 16. The episode, titled "Anteaters are Just Crazy-Lookin' Ants," originally aired in 2008 and features Charlie dealing with his feelings for a woman who looks exactly like his mother. Episode Recap: S05E16
PL indicates the file includes a Polish "Lektor" (voiceover) or subtitles. Dwa.Czt3r7.S05E16.PL.720p.BluRay.x264-psejta3.mkv
psejta3 is a frequent uploader on Polish torrent and file-sharing communities like Chomikuj or Polish tracker sites. This specific file name refers to a Polish-dubbed
MKV (Matroska Video), a container that supports multiple audio and subtitle tracks. Episode 16. The episode