 According to animator Mark Kausler , Krantz was so nervous about showing too much nudity and sexual activities that he had several versions of some sequences animated , for instance , in the " Maybellene " animation sequence . Kausler says that a sequence was animated in which the viewer sees " the key in the ignition metamorphose into a penis entering Maybelline 's vagina . " This sequence was deleted from Heavy Traffic , but the same action appeared in the film Down and Dirty Duck . Kausler also states : 
