Snog

From Wakipedia

Snog or Snogging Context is so important with terms like this, as non humans also use this word with similar intent, but wildly different expression. For example, the Zaknarian tentacled hyperbeast uses this as an aspect of its mating dance. The hyperbeast, while generally considered safe to associate with, is extremely affectionate, and is one of the galaxies few documented xenosexual species.

If one of these creatures decide to 'snog' with you, it is best if you are

 A. Female, and 
 B. Fairly open to considering other species methods of foreplay.