Affectionate or not-so-affectionate name for Strongbow cider (depending on whether you like it - I like it), a cheap volume drinking apple-derived alcoholic beverage found mainly in the UK. May induce gut rot and make you lairy.
"I was feeling pretty ropey when I got to the club but I got on the wrongbow and after 5 or 6 cans I was proper twunted"
Lacey: Yo what's up.
Dancer: Doing some rad tiger claws and early grabbin some curbs.
Lacey: Psh wrongboarder, how about you get rad and go bomb some hills.