A Night at the Roculus lets you slide a $350 virtual reality headset on and recreate that head-knocking Chris Kattan joke from mid-90s Saturday Night Live. It counts your “nods” and “pecks” as you jerk your head to the beat of the immortally corny track “What Is Love” by Haddaway. As Chris Kattan, et al, did 20 years ago. [Exuent readers.] I mean, that’s it. Yucks like this are as good as they are bad. On one hand, VR ought to be fun, and funny, and absurd; it ought to catch people’s attention. And inasmuch as this encourages people to jerk…