Because sooner or later spending moments kissing him was going to be both creepy and gross, Bruce's not at all really going mind, and still dark sense of humor supplied.

He left it alone. He couldn't force that on Clark and it wasn't all that urgent, anyway.

"To mock him. Pay attention."

He simply made a low sound in his throat and took advantage of the lowered gravity to hoist himself over onto his side. That - hurt, fairly badly actually. His body reacted to that pain and Bruce just - pushed it aside as best he could.

It was worth it for the ability to properly get his hand into Clark's hair. More importantly it let him kiss Clark back, sweet and soft.