As flash mobs go, this one may have lacked the finishing touch.
Its members weren't dancers but just community services students at Wollongong TAFE.
They gathered outside the campus canteen yesterday morning and waited in yellow T-shirts for the first notes of Yolanda Adams's I Believe.
As the chorus kicked in, arms and legs were thrust in every direction. Small fits of laughter broke out in the ranks as a couple of twirl-induced collisions brought the formation unstuck.
Looking sideways at one another for encouragement, they fell into perfect step during a section of the routine peppered by claps. Smiling, they embodied the "R U OK? Day" message better than any slick dance troupe could.
About 40 students and staff made up the mob for part of the national mental health day of action, which encourages people to regularly and meaningfully ask "are you OK?" to those who could be struggling with life.
Jenny Hill, head teacher of community services work, said students had attended weeks of choreography rehearsal leading up to the morning-tea flash mob, which was treated as an exercise in public health promotion and event planning.
Susanne O'Brien, 22, who is studying community services work, said it was important to take aim at the stigma around mental health, particularly among young men.
"It's just a way to look after your mates," she said.
"It [the flash mob] was all right besides a few mistakes with a few of the steps," she said.
Another in the mob, Tegan Wilson, said: "It's good to get everyone smiling, even if we did look like complete idiots."