I Love Whale Tail

This is a whale tail

According to Leslie Knope it's when a woman is wearing a thong that is visible above her pants

Thong above the waistline.

Thong sticking out above your pants/yogas/slacks.....

Peeking thong panty.

This is a whale tail: https://similarworlds.com/9619199-I-Love-Having-A-Whale-Tail/3373678-I-Love-Having-A-Whale-Tail

On a Porsche it the wing in the back that diverts air down

Do you like white snake