▁Bob ▁has ▁escaped , ▁but ▁W alt ' s ▁short ▁feet ▁reve al ▁his ▁true ▁identity . ▁W alt ▁explains ▁that ▁he ▁and ▁Bob ▁were ▁cell m ates ▁and , ▁prior ▁to ▁W alt ' s ▁release , ▁Bob ▁dru gg ed ▁him ▁and ▁performed ▁a ▁trans plant ▁to ▁switch ▁their ▁faces . ▁The ▁trans plant ▁left ▁W alt ▁unable ▁to ▁talk ▁properly , ▁causing ▁the ▁gu ards ▁to ▁put ▁him ▁in ▁the ▁p added ▁cell . ▁He ▁wrote ▁his ▁message ▁on ▁the ▁wall ▁as ▁a ▁warning , ▁but ▁it ▁was ▁mis inter pre ted ▁as ▁a ▁threat . ▁W alt ▁and ▁the ▁Sim ps ons ▁go ▁after ▁Bob . ▁Meanwhile , ▁a ▁wait ress ▁at ▁a ▁road side ▁din er ▁becomes ▁inf atu ated ▁with ▁Bob - as - W alt ▁until ▁Bob ' s ▁new ▁face ▁pe els ▁off . ▁Am id st ▁a ▁dist raction ▁outside ▁the ▁din er , ▁H omer , ▁Mar ge , ▁and ▁Lisa ▁travel ▁to ▁Mexico ▁in ▁search ▁of ▁Bart ▁while ▁W alt ▁gets ▁away ▁and ▁continues ▁to ▁the ▁Five ▁Corn ers . ▁ ▁At ▁Five ▁Corn ers , ▁Bob ▁int ends ▁to ▁kill ▁Bart ▁in ▁such ▁a ▁way ▁that ▁the ▁crime ▁takes ▁place ▁in ▁all ▁five ▁states , ▁thus ▁making ▁it ▁impossible ▁to ▁pro sec ute . ▁Bart ▁st alls ▁by ▁repeatedly ▁jump ing ▁into ▁the ▁same ▁state ▁as ▁Bob ▁until ▁W alt ▁arriv es . ▁W alt ▁and ▁Bob ▁struggle ▁over ▁the ▁gun , ▁but ▁just ▁before ▁Bob ▁can ▁fire ▁on ▁either ▁W