me-tooer
/ˌmiːˈtuːə/informal (frequently depreciative ). originally US
noun
A person who acquiesces in, adopts, or imitates a view or policy (especially a successful or popular one) proposed or championed by another (usually rival) person or party; (more widely) a person who rushes to follow a trend.
Origin
1920s. From me too + -er. Compare later me-too.