Dances in the end zone, maybe

• Wins in an ugly way?
• Shows evil satisfaction
• Rejoices tactlessly
• Rejoices, in an in-your-face manner
• Says 'I told you so!'
• Acts smug
• Says "I told you so!"
• Rubs it in
• Exults maliciously

Wiktionary Word definitions in Wiktionary
n. (plural of gloat English) vb. (en-third-person singular of: gloat)