Sentence:  ‘You gonna <WSD>pash</WSD> her?' / ‘We only just started going together,' I said. <WSD>"Pash</WSD> her? Already? I hadn't even kissed a girl properly yet." / ‘Do you know how to pash?' It sounded like a challenge. Jed Wall was a bit like that. When he wasn't just hanging he was fighting or <WSD>pashing</WSD> or something that no one else was good at. 
Meaning of the word marked with <WSD> tags:  To snog, to make out, to kiss.