DB Chapter 154
From Dragon Ball Encyclopedia, the ''Dragon Ball'' wiki
"Tenshinhan vs. Drum" (天津飯の誤算, Tenshinhan no Gosan; Literally meaning "Tenshinhan's Miscalculation") is chapter 154 of the Dragon Ball manga.
Drum prepares to fight Tenshinhan, as Goku nears King Castle. Tenshinhan rushes at Drum, and swipes at him, but Drum ducks it, and then punches at Tenshinhan. Tenshinhan catches his fist, though, and starts kicking at Drum, but Drum dodges, and then punches Tenshinhan in the face, knocking him back. Drum follows up with two kicks, and then elbows Tenshinhan, knocking him backwards. But Tenshinhan catches himself, and flies back toward Drum with a headbutt to the, uh, head.
Drum laughs about this interesting guy, as Tenshinhan thinks about his unbelievable strength and speed even though he's just an ordinary henchman and not Piccolo. Drum appears next to Tenshinhan before he can react, and then gets behind Tenshinhan and punches him in the back. Tenshinhan falls down face first, really hurting, so Piccolo tells Drum to completely crush this persistent guy's heart.
Drum stands over Tenshinhan, and prepares to put his hand through Tenshinhan's back, when, suddenly... In a flash, Drum is knocked off Tenshinhan. Goku is here, and Tenshinhan's happy to see he's still alive. But Piccolo doesn't share the sentiment. Goku notices Piccolo's face is different, and Piccolo explains that he got his youth restored, and overwhelming power came along with.
Tenshinhan yells at Son to run away, but Goku's not worried. Piccolo wonders why these sorts of idiots just won't die, as Drum instantly appears next to Goku. But, Goku just jumps up and kicks Drum in the head, smashing it open and popping an eye out. Tenshinhan and Piccolo are shocked!