不敢喝雪碧是因为怕透心凉
[bù găn hē xuĕ bì shì yīn wéi pà tòu xīn liáng]
The phrase humorously implies avoiding Sprite (a soda drink) due to its icy-cold temperature giving a shocking chill inside, but could also be a metaphor for fearing strong sensations in life.