 But where did Weekend at Bertha's come from? It's hosted by the Merry Pranksters, which date back to the 60s. They were a counterculture group that followed the Grateful Dead in tons of tie-dye on this giant colorful bus throughout the entire tour. So they've made themselves a name. For more information, go to WDEL.com. I'm Rachel Suga, WDEL, Delaware's news radio.