When you place a laptop on your stomach to collect the warmth the laptop is then referred to as a tummy top.

v. collectively or individually finding someone/something to blame for a problem, as opposed to brainstorming which connotes finding solutions to a problem

n. the act of finding someone/something to blame for a problem

(from a TV ad for HD television)

A small laptop you place on your “tummy” while laying down so you can watch porn and browse with one hand while the other reaches around the screen and takes care of business.