Messeges Flashed up in TV programs

[Combat squirrel]

Just watching brainiac on sky three and twice in under 10mins a 1 frame messege flashed up saying 'you are thirsty' luckly im watching it on my PC and rewound it to go through frame by frame and a big messege that says that flashes, both in the program and on the commercial break, what on earth ? lol

 

[Combat squirrel]

haha yeah there explaining it now glad I clocked it lol

 

[Combat squirrel]

how do you have the sky box setup to go into the pc etc.

Its on freeview channel 11, using a dvb-t happauge nova-t pci