Catch the Rainbow 

To catch the rainbow means to achieve the impossible, figuratively.

Finally, I have caught the rainbow! *Insert thing you have achieved*.
I will catch the rainbow with this project I'm making!

Catch the Rainbow by Ender_406 March 11, 2021

Catch the Rainbow 

to have sex, mainly in a loving way towards a soulmate and not in a lustful one night stand.

lets catch the rainbow tonight lover <3

Catch the Rainbow by 66666666666 August 15, 2011

Catch the Rainbow 

The act of pulling down an erect penis, placing a skittle on the head, and releasing the penis to send the skittle flying through the air to the waiting open mouth of your partner.

I thought that she was a nice, Christian girl, but the first night together she wanted to play Catch the Rainbow.

Catch the Rainbow by Gerdra August 10, 2022