"Hmm, could have some fun in here." David thought, popping into a small convenience store. When he got in there, he smiled as he looked around, the place was pretty full with unsuspecting shoppers and a couple of checkout girls. One of the girls on checkouts was only a teenager, of Asian descent, probably Vietnamese, the name badge on her shirt read Bian. Lets see what effect this has. David thought, swapping the girl's ethnicity with the Caucasian man she was serving.
In no time at all, after watching the girl become white, David noted her name tag now read Bianca, a subtle change, but it was interesting to him. The guy, now of Vietnamese descenty didn't have his name on display so David had no way of knowing that his name had gone from Gary to Giang.
While slightly amusing to him, the ethnicity swap did not excite David as much as certain others did. So he next turned to the owner of the convenience store, a typical middle-management guy with a slight beer belly, wearing a pair of beige trousers, a shirt with a loose tie and some brown loafers. He was chatting with a middle-aged woman about his own age (early 40's). Pretty disheveled look, um... lets give him some saggy boobs to match the saggy gut. David muttered, studying the man's unimpressive appearance. With a mere thought, the woman who he was talking to lost her breasts as they melted into her chest, replaced with the manager's flat, really hairy chest. The woman even had hair up to the base of her neck now, particularly hirsute. But the manager looked hilarious with two ageing D-cup breasts stretching his shirt and even popping off a button part of the way down. David wasn't nasty enough to leave the guy without some 'support' though, and he also swapped the woman's bra over to the guy. Better! David nodded, smirking as he moved onto the next aisle.
"You're not having any chocolate Meredith, growing girls should eat healthy." David heard a woman in her mid 30's telling her 10-year old daughter, who was a bit on the skinny side. "Since you're not feeding your daughter right, maybe I should give her the growth she needs." David thought, swapping the girl's physique and height with her own mother. The woman shrank down to her daughter's 4' 10" height and lost a considerable amount of her body mass and her physical strength, meanwhile the daughter enjoyed a growth spurt, gaining the weight her mother had lost and shooting up to 5' 7", both their clothes adjusting to fit their changing bodies. "Problem solved." David chuckled, before moving onto the next aisle.