The term "deepdicc" is a slang used in adult content, which is a playful misspelling of the word "deep dick". It refers to the act of engaging in sexual activities where the penis penetrates deep within a partner's vagina or anus. This type of activity is often associated with hardcore or intense sexual scenes in porn videos, as it emphasizes the depth and intensity of the penetration. However, this term can also be used to describe any act involving deep penetration in various sexual contexts.