As a kid, I’d go into the bathroom when I was having a tantrum. I’d be in the bathroom crying, studying myself in the mirror. I was preparing for future roles.

Sandler frames childhood emotional outbursts as an early, instinctive form of performance practice. By describing himself crying while watching his own face in the mirror, he suggests a self-conscious curiosity about how feelings look when expressed—an actor’s habit of observing and calibrating expression. The line also humorously recasts a private moment of vulnerability as “training,” implying that acting can grow out of ordinary life rather than formal instruction. More broadly, it points to the porous boundary between authentic emotion and staged emotion: even real tears can become material for craft once the performer begins to study them.