gargling

Brodie usually has water at bedtime. He often gargles that water and is told to stop before he makes a mess. Last night was no different. Katherine was reading Encyclopedia Brown to us. Brodie is drinking his water, (gargle gargle gargle). I tell Brodie to stop and he does. (gulp) So I ask, "Are you allowed to do that?" Brodie responds, "No." (sip - gargle gargle gargle) I do my best mommy poker face as I force myself to neither laugh nor smile and then calmly ask, "Then why are you doing it again?" Brodie simply said, "(gulp) I don't know."