Might be Spy Hard (1996).
Secret agent WD-40 <PERSON> (<PERSON>) has his work cut out for him. Along with the mysterious and lovely <PERSON>, Agent 3.14, he must rescue the kidnapped <PERSON> and stop the evil genius, a General named <PERSON> (<PERSON>), from seizing control of the entire world.
<PERSON> was wounded in an earlier encounter and no longer has arms. However, he can "arm" himself by attaching robotic limbs with various weapons attached. <PERSON> is talked out of retirement by an old friend, agent <PERSON> (<PERSON>), and given his new assignment by The Director (<PERSON>), who also is testing out a variety of elaborate disguises. At headquarters, <PERSON> encounters an old agency nemesis, <PERSON> (<PERSON>), and flirts with the Director's adoring secretary, referred to as Miss <PERSON> (<PERSON>).
On the job, <PERSON> is assisted by an agent named <PERSON> (<PERSON>), who gives him rides in a never-ending variety of specially designed cars. 285
They seek help from <PERSON> (<PERSON>), a blond child, home alone, who is very good at fending off intruders. <PERSON> resists the temptations of a dangerous woman (<PERSON>) he finds waiting for him in bed. But he does work very closely with Agent 3.14 (<PERSON>), whose father, Professor <PERSON> (<PERSON>), is also being held captive by <PERSON>.
Everything comes to an explosive conclusion at the General's remote fortress, where <PERSON> rescues both <PERSON> (<PERSON>) and Miss <PERSON> and launches a literally disarmed <PERSON> into outer space, saving mankind.
Clip of the chair scene: https://www.youtube.com/watch?v=xqJ3lx43lMg
From CrankyCritic.com:
In some ways Spy Hard is a twisted inside out and played on its side version of <PERSON> and <PERSON> Get Smart television series. This time though, Agents 86 and 99 are nowhere to be seen. <PERSON> is now the Director (played by <PERSON>) and he has moved up in the world, impersonating furniture, rugs, Venetian blinds and other large household items. Borrow the undersexed secretary and secret weapons designer from the <PERSON> movies, stir it all up and see how many jokes about flatulence you can come up with. 295