Possible Clues:

• Gatecrashes inns around Germany, Spain and up North
• Gate crashes inns around Germany, Spain and up North
• Interrupts what may be wrong in a canal boat?
• Gate crashes pubs around Germany, Spain and up North
• Gate-crashes, enters forcefully
• Head of gendarmerie interrupts naked naughtiness -- thus?
• Interrupts one of those selling drink, for example? On reflection, it's wrong
• Enters without knocking
• Enters uninvited
• Enters abruptly