Turns out it's anti-Joe Biden, anti-Liberal, hate thing promulgated by the reich-wing here in the USA. You can Google the t-shirt slogan if you want more info. I'd suggest you not bother.
I'm not a fan of fascism or child indoctrination in hate speech so as soon as I researched this I raced back to the blog and deleted those images.
Sorry to not have done my research sooner.
I have friends on both sides of the aisle but I draw the line at nasty hate speech and adolescent innuendo.
Reasonable people can disagree but there it is. Ageism is just as nasty as rascism.
thanks for the push Phil.