H

A medical abbreviation for hour; used to inform patients of the frequency in which they should take the medication; commonly appears with Q and the number of hours.

If you receive only the letter "h" in a text or chat message, the person you're speaking with may be sending you a virtual hug. More often, "hug" is written as <h>, to help recipients understand the abbreviation's meaning.

If you want to (virtually) hug someone back, you can respond to <h> with HB. If you want to include some smooches in your response, you can reply with H&K or the more-uniformly-recognized XOXO.