While on YouTube, this ad starting playing as one video transitioned to the next in the YouTube playlist 
Seriously? Really?
Sometimes, I'll open a new window in Incognito Mode just to start a vanilla session; thus all extensions are disabled while browsing which results in ads.
And another one,

Seriously? Really?

Sometimes, I'll open a new window in Incognito Mode just to start a vanilla session; thus all extensions are disabled while browsing which results in ads.
And another one,