If I were Cam Guthrie, I'd watch out.
The Geelong star dished out a few words to Max Gawn on the siren after his missed set shot in the dying moments of last Sunday's Dees/Cats clash.
It's definitely caught the attention of US tennis star John Isner.
Gawn replied to a recent tweet from Isner on Wednesday morning, who must be keeping on the one-time All-Australian ruck's recent form.
Isner chimed back, changing the topic to Gawn's last game and Guthrie's last sledge.
"You're the man, Gawny. I'll sort Guthrie out if he comes on American soil," he wrote.
Isner and Gawn do seem to be mates and their Twitter history does go back a bit, so no surprise they've got each other's back.
Both blokes are six foot 10. Cam Guthrie's been warned.
After letting Tom Mitchell run wild on the weekend, Collingwood absolutely copped it from Paul Roos!