groovy poster with hypnotic mushroom. retro poster with psychedelic mushroom. vintage print for tshirts and hoodies

groovy poster mushroom hypnotic retro psychedelic vintage print hoodies vector illustration line art card postcard hypnosis tongue eye red yellow outline hand drawn fly agaric character cartoon y2k background comic 70s graphic design face crazy style old wallpaper abstract 1970s grunge 60s fun shirt wear slogan typography emoji flat doodle