Other forms: slugabeds
If your favorite activity is laying in bed all day, you can refer to yourself as a slugabed.
Slugabed is a playful term for someone who stays in bed longer than they should, often because they’re too lazy to get up. Somewhat unsurprisingly, the word combines slug, suggesting slowness, and abed, meaning "in bed." Historically, it was used to describe someone who was lazy or slow to start their day. Today, it can be used humorously to tease someone who enjoys lounging in bed.