Common techniques are stroking the inner thigh, cupping the wenis, tickling necks, fingerering ear lobes, noses, or any holes.
Person 2: No..
Person 2: *touches person 1's mid thigh* Are you nervous??
Person 1: No.
Person 1: *touches inner thigh almost brushing again genitals* Are you nervous?
Person 2: Uhm yes.. get the fuck away from me cunt.