Ice puns. You know, stuff like "looking cool Joker" after he uses an ice attack. Or "cool attack there Iceman". Or "Cool job rescuing those civilians other ice themed hero." Ice puns. Puns related to ice and cold things.
*Gamma sighs and points at his shoes* Look, I am a guy currently wearing Heelies. Do I look like I have anything left to lose? But having nothing to lose means you have everything to gain. *Heelies off into the sunset*