Unless the fever is over 100°F it's not considered 'hot clam'. A fever of 103+ is extremely mood-inhibiting thus only achievable by master hot clammers. Therefore optimal temperatures will be between 100-102°F ~ 37-39°C.
n. Hot Clam, Clam·med, Clam·ming, Clam·mer
Dude: "I bet it was worth it though."
Guy: "It was the best pussy I've ever had. Period."