Hineinblasen

Hineinblasen is a German verb that literally translates to "to blow into." In a general context, it can describe the act of expelling air into something, such as blowing into a balloon or a musical instrument. However, the term also carries a more colloquial and potentially vulgar meaning.

In informal German, "hineinblasen" can be used as slang to mean to perform oral sex, specifically fellatio. This usage is considered vulgar and is generally not appropriate in polite conversation or formal writing. The specific connotation can vary depending on the context and region, but the sexual interpretation is the most common informal meaning.

Outside of these two primary meanings, the literal sense of "blowing into" can appear in more technical or specialized contexts, though these are less common. For example, in certain industrial processes, air might be blown into a system for cooling or cleaning. However, when encountered without further context, the common understanding often defaults to either the literal act of blowing or the vulgar slang term. It is important to be aware of the potential for misinterpretation due to the dual nature of the word's usage.