Related Clues:

• Evince malicious pleasure
• Dance in the end zone, say
• Be smug
• Express schadenfreude
• Be an immature victor
• Smug winners do it
• Act self-satisfied
• Exult annoyingly
• Brag obnoxiously
• Be a bad sport
• Be a sore winner
• Sneer, 'We won!'
• Unsportsmanlike look
• Crow (over)
• Be an ungracious winner, in a way