flip the bird, flip off, give the middle finger, chin flick, raise (fist), slap (the bicep), give (the finger), make (fist), purse (fingers), encircle (middle finger), give (a thumb down)

jab, hammer, snap, protest, agitate, unleash, rend, attack, glare, explode, erupt, refuse to, harass, blow up, spit, revile, uncork, stir up, seethe, penalize, rupture, lash out, act out/up, exacerbate, storm, scowl, sneer, glower, accuse, flare up, antagonize, punish, foment, snort at, slam (the door), rampage (through the office), fly (into a rage), go wild/berserk, vituperate, rail against

jab, heckle, stir, agitate, badger, pester, menace, trigger, ignite, pressure, escalate, confront, foist, harass, rankle, spit, provoke, inflame, pick on, tick off, rouse, roil, aggravate, irritate, torment, plague, goad, needle, hassle, antagonize, instigate, rile, anger, incite, enrage, infuriate, pit (someone against someone else), drive (to distraction), harry, pick (a fight)

blast, pelt, hammer, unload, snap, fume, order, vent, sear, tear down, howl, mock, scream, fight, bellow, snarl, growl, bait, roar, exaggerate, insinuate, vilify, curse, shout, yell, demand, argue, rehash, berate, bicker, rankle, disparage, ridicule, swear, drown out, spit, insult, counter, incense, overstate, demonize, put down, blame, grill, deride, rave, bawl, lambaste, scorn, bruise, accuse, goad, chide, rebuke, ream out, dredge up, hash out, affront, cuss, foment, rail, zing, raise one's voice, edge in, snipe, damn, rant, stab (with snark), sling (insults), raise (one's voice), savage