This dude ducked out of a dinner party early, making his friends absolutely furious. Some people will always take advantage of your generosity! In this post to r/AmItheA******, u/OldAbbreviations6423 had a pressing question regarding his current friend group. The OP is in the awkward position of being one of the higher earners in their friend group, so they've kindly covered tips in the past while the group was out dining. But the OP noticed an interesting pattern of their friends over ordering…