The skit’s idea was simple: when you use Arnold Schwarzenegger’s famous accent out of context, anything can sound funny. While on his promotional tour for Terminator Genisys, the Oak appeared on Jimmy Fallon to put that theory to the test. Arnold “linked brains” with the late night host and recited some lines, and here’s what happened.

Looks like Arnold had some trouble keeping a straight face on that one. If his Twitter account is any gauge, he’ll be back on the show again soon.