Wow, that was cold.

During a sports report on Australia's "Ten News at Five," anchor Belinda Heggen hit sports reporter Mark Aiston with a low blow joke -- pretty clearly mocking his penis size on live television.

In defense of Heggen, Aiston really set himself up there, but the look of death he throws her shows that he was less than amused.

We can't be the only ones thinking those two have a past.

WATCH: (via The High Definite)