swagvert
a dry, unsuccessful advert which fails to please the population it's broadcasted to.
Example:
Jamal: fam, in da break afta the first half of da west ham vs middlesbrough game on tv u see da churchill car insurance ad?
Martin: Yes, fam its wuz syyyyykkk!!
Jamal: Shuuuuhhuuuuuttt yuh muh u bean! that wuz such a swagvert!!!