Either he’s not worried about her picking up anything particularly sensitive or he’s just not one to feel embarrassment.
As for Drax, he finds this revelation hilarious, though for some reason, he wants Mantis to use her ability on him next.
The trailer ends with arguably its most hilarious scene, as we meet new member Mantis and learn about her ability to sense someone’s feelings just by touching them.
Unfortunately for Peter Quill, she immediately picks up on his “sexual love” for Gamora.