Submitted by György Chityil ... on Fri, 01/19/2018 - 22:19 Hierarchy: VerbDescription: {{idiomatic|euphemistic|colloquial}} To perform oral sex upon (either sex).Ngram: go down onNgram Text: go down onSource: WiktionaryIssue: 0Wiktionary tag: euphemisticNgram Count: 3