At first they tried to conceive on the Gravi-Tron, much to the chagrin of the other patrons. (too messy.)
Sax, I witnessed a 'chain-vomit' on a Gravitron. It was horrible: the first kid lost it right away, all over the kid next to him so he blows lunch and so on and so on--and we're literally stuck to the walls while a half-dozen more followed suit. People staggered off white as sheets. Carnies had to hose it down . . . before I'd get back on.