tap (someone or something) with (something)
To use some item or instrument to strike someone or something very swiftly and lightly. He tapped the nail with his hammer so as not to damage the wall. The police officer tapped the man with his baton and asked what he was up to.
tap something with something
to make light blows on something with something. Alice tapped the table with her keys in an annoying fashion. Just tap the nail lightly with your hammer.