dirt wipe

Dirt wipe is a gradeschool level insult that is the censored version of Ass Wipe often used by really young children or adults who can't (and/or) choose not to curse yet as a way of censoring the more vulgar version.

Amy: you know jake has really been a big dirt wipe today...
Jim: c'mon amy i know ya don't swear but don't ya want to use Ass Wipe sometimes?