A lazy large slug-like mammal. Most smlugs come in a female species and hibernate on mattresses and couches that they are not in position of. Smlugs often feed off food that they have discovered in cold white boxes nearby their slumber. Examples of food that smlugs consume include butter, bread, and cheese.

A jack off buddy (from 'cum' /'come', meaning 'semen', and 'companion'); a friend that you get together with for sessions of solo or mutual masturbation
Variant of: cumpanion (from 'companion' & 'cum'); jack off buddy & wank bud & JO buddy
Similar to: fuck buddy