Not just a reversed Slav, but a reverse Semi-Slav Triangle defense. The Colle is marked by d4, e3 and c3.
Other 1.d4 openings that involve b3 instead of c3 are not the true Colle and merely confuse readers into thinking the Colle is playable. (Yes, even chessgames.com gets the nomenclature wrong occasionally. Take a look at the system Colle himself invented and what he played. He didn't play b3. He played c3.
I agree, the Colle is a pox on chess. But it is a great way to herd sheep, as Omar said. (GMs rarely play openings that are a pox on chess. Yusupov doesn't play the Colle.)
I presumed he was referring to the breed of dog, commonly used for this purpose, with a similarly-spelled name
And the Colle-Zukertort is a reversed QGD ?
I think this will be enough to make Fezzik start fumbling.