double take

Etymology
From as used in acting, especially in comedy.

Noun

 * 1) An abrupt movement, used, for example, as a comical reaction to a surprising sight, in which someone casually sees something, briefly stops looking at it, realizes what it is, and snaps attention back to it with an expression of surprise or disbelief.

Translations

 * Bulgarian: закъсняла реакция
 * Esperanto: reatento, subita reatento
 * German: zweimal hinsehen müssen
 * Italian: scoppio ritardato
 * Japanese: 二度見
 * Korean: 두번보고
 * Russian: заме́дленная реа́кция, повто́рный взгляд, внима́тельный осмо́тр