A game of pretend
A stupid online joke where a guy gets hit on by a guy who acts like a girl and says he can dress up like a cartoon and have some fake sex. If he says no, he's a loser. If he says yes, he's a king.
'You can be my SpongeBob and I'll let you eat my square pants.' 'No way, I'm not dressing up like a yellow sponge.'
'Dude, you can be my Donald and I'll let you be my Donald.' 'Yes, I'm your Donald and I'll be your Donald forever.'
'You can be my Pikachu and I'll let you zzz me to sleep.' 'Yes, I'm your Pikachu and I'll zzz you to death and also to the moon.'