I've been wondering a similar thing as I wanted to have fake blood in the bathroom for the party... It's not long done up though so didn't wan't to have to scrub dye off the bath etc, or worse, have staining!
Unsure how a mix of tomato and BBQ sauce would look...
Edit: I found this.... http://www.ehow.co.uk/how_8264824_make-fake-blood-ketchup.html
Unsure how a mix of tomato and BBQ sauce would look...
Edit: I found this.... http://www.ehow.co.uk/how_8264824_make-fake-blood-ketchup.html