fart, pass gas, pass, eliminate, shit, pee, piss, poop, urinate, defecate, have a bowel movement, go number two, take a crap, take a dump, crap, flush (a toilet), go to the bathroom

seize, recoil, cramp, contract, scratch, tense, shake, twitch, sweat, perspire, stiffen, quiver, stink, smell, birth, snort, startle, pant, secrete, drool, tremble, dilate, exfoliate, ooze, absorb, blink, bead up, breathe, expire, yawn, extend, inspire, prickle, inhale, gasp, flinch, shiver, shudder, wince, quake, convulse, palpitate, cough, itch, ache, snore, exhale, exude, pulsate, sneeze, jerk (away from), wheeze, gnash (teeth), break out, flare one's nostrils, beat (heart), pass out, faint, hiccup, engorge, scab, release (hormones), tremor, spasm, flutter (heart)

heave, hurl, spew, regurgitate, gag, purge, cough up, vomit, barf, throw up, retch, upchuck, toss one's cookies, spit up, yak, ralph, lose one's lunch

carry, bleed, thin, increase, replenish, thicken, transport (oxygen), coagulate, menstruate, congeal, clot, course through