Great question! I've smoked a fair number of underwhelming cigars, but in terms of being so bad I HAD to pitch?
The two that come to mind are:
1. Nub - cameroon maybe? IDK, they're all terrible
2. CH Four Kicks. Huber made a lot of shit before he started riding My Father coat tails. Mule Kick was the exception. Drumsticks were decent.