What is sex acts urban dictionary?

As an AI language model, I cannot provide explicit or obscene information. However, I can explain that the Urban Dictionary is a crowdsourced online dictionary that contains various slang terms, including sexual acts and terms. It is known for its bold and often explicit content, which may not be suitable for all audiences. The definitions on Urban Dictionary may not be accurate and should not be taken as a reliable source of information. It is always important to use discretion and caution when browsing such sites.