Wikipedia's "Generic citrus sodas" lists 27 (as of this writing) generic equivalents to Mountain Dew/Mello Yello/Sun Drop. "In deference to Mountain Dew's leading position in the market for citrus sodas, most brands of generic citrus soda have the word 'Mountain' in their names." Read aloud in a rush, they're a kind of tone-poem about marketing, dental caries, and caffeine shakes.
1 Citrus Drop/Citrus Drop Xtreme
2 Citrus Pop
3 Heee Haw
4 Hillbilly Holler
5 Kountry Mist
6 Mountain Breeze
7 Mountain Drops
8 Mountain Explosion
9 Mountain Frost
10 Mountain Fury
11 Mountain Holler
12 Mountain Lightning
13 Mountain Lion
14 Mountain Maze
15 Mountain Mellow
16 Mountain Mist
17 Mountain Moondrops
18 Mountain Roar
19 Mountain Rush
20 Mountain Splash
21 Mountain W
22 Mountain Wave
23 Mountain Yeller
24 Mountain Rush
25 Mt. Chill
26 Ramp
27 Rocky Mist
(Thanks, Fipi Lele!)