"So what?"

• Unimpressed feeling
• "Whatever ..." (for the record, this isn't a "Simpsons" neologism, despite what the Internet tells you)
• Modern slang word suggesting apathy
• Word often uttered with a shrug
• 'Whatever ...'
• "It doesn't excite me"
• "Not impressed!"
• "That doesn't impress me much"

Wiktionary Word definitions in Wiktionary
a. 1 mediocre; lackluster; unexceptional; uninspiring. 2 apathetic; unenthusiastic. interj. (context slang English) (non-gloss definition: Expressing indifference or lack of enthusiasm.)

Wikipedia Word definitions in Wikipedia
MEH or meh may refer to: Meh , an interjection to show a complete lack of interest and/or boredom Multiple-effect humidification Microsomal epoxide hydrolase Mehamn Airport , Norway (IATA code) Nuyoo Mixtec language (ISO 639-3 code)