shallow for 

To be "shallow" for a person means you like them, but only for their appearance or physical attributes. Similar to being "hot" for a person (having sexual interest in a person), except more specific in your reasoning for liking them.

Example A: "David is so obviously shallow for Cindy... he always mumbles about how great her boobs are."

Example B: "I hate to admit it, but I think I'm shallow for Curt after having seen his 6-pack at the pool the other day."

shallow for by Hello Asphalt January 14, 2008

Swallow formation 

A make believe phrase invented by a mentally unstable human when playing chinese whispers at the age of 11

Teacher: ‘the key is in the locker at train station’

Mentally unstable human:’swallow formation?’

Swallow formation by Mrsbarnearse123456789 February 25, 2018