Possible Clues:

• Do second language before end of schooling
• After climb, fancy a wild party
• Bash bone and make a hole
• Noisy knees-up
• Party language among squabbling fringes
• Part of leg, mine, in knees-up
• Get-together is bore after hour sunk in immorality
• Son hid gin drunk in loud celebration
• Dish gin out — it’s a party!
• Nudge under the table in party