Matthew Fish, 19, thumped his victim on the dancefloor in a busy nightclub but was so drunk he couldn’t remember the violent attack.
A court heard the reveller had downed five Fosters, a Jack Daniels and coke and a rum-based drink known as “Turbo Charger” before he pestered the young woman in The Sugar Mill nightclub in Hull, East Yorks.
But when the reveller spurned him, he was confronted by her brother and whacked him.
Fish pleaded guilty to assault by beating yesterday at Hull Magistrates Court, but dodged jail. He was instead fined just £80 and ordered to pay £25 compensation to his victim.
But the court heard the conviction may have ruined Fish’s dreams of joining the Royal Marines.
Rebecca Dolby, prosecuting, said the drunk teenager injured the victim in the horrific attack. However JPs heard the wounds were “low level”.
Amelia Woollen, defending, said: “He has held his hands up. A witness described seeing the male and the victim squaring up on the dance floor. He made a nuisance of himself.
“His actions caused a low level injury, but the ramifications for my client are quite serious. He lives at home and wants to join the Royal Marines. This may now prove extremely problematic.
“He has potentially blighted his chances of joining the Royal Marines. That’s obviously a matter for the Royal Marines.”
Fish, who lives with his parents in north Hull, must pay court costs of £85 in addition to his fines.