schnackseln
Translation
to have sex, to shag, to bonk
Examples
Sie haben gestern Nacht geschnackselt.
They had sex last night.
Grammar Patterns
((with sb.)) to have sex with sb. She had sex with him.
Similar Words
vögeln, bumsen, Sex haben (all colloquial/vulgar for 'to have sex')
Etymology
Origin unclear, likely onomatopoeic. It's a regional (Bavarian/Austrian) colloquialism.
Memory Tips
This is a very informal, slang term. Think of the 'snack' sound, but for an adult activity. Do not use in formal contexts.