Someone whose personality is normally domineering in interpersonal situations but whose sexual preferences are submissive. The opposite of a soft top.
Jess: Your bf comes off as a bit rude tbh

Ingrid: Yeah he's bit of a control freak sometimes, but when it comes to sex he's actually into submission. He's such a hard bottom haha
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A man known as TheLastSpade on discord and vrchat. Can also just refer to a hard bottom as a spade. Hard bottoms/Spades are very submissive men who fantasize about getting arrested by sexy female police officers in fishnets.
Dude bruh, that man bro? Hard bottom.

Example 2: Be a man, Timmy. You are pulling such a spade right now.
by RavenOnline October 15, 2020
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